edit text on blank page?

Question

As my title, how do I put the text and footer on the blank page which after every title page? This is my code so far, but this only effect on the blank page before the title page!Also I use python and json to load the data.

Sorry for late updating, this is the completed code which I use for my json file but it also has the same problem. I think there may has some conflict problem between my code, but I don't know how to fix it. Is anyone know where's the problem? Thank you very much.
page 6 is the blankpage before title page, page 7 is title page and page 8 is the blankpage after title page

\documentclass[11pt,letterpaper,twoside]{book}

\usepackage{fancyhdr}
\usepackage{fontspec}
\usepackage{color}
\usepackage{colortbl}
\usepackage{longtable}
\usepackage{array}
\usepackage{anysize}
\usepackage{tabu}
\usepackage{multicol}
\usepackage[explicit]{titlesec}
\usepackage{titletoc}
\usepackage{xparse}
\usepackage{amsfonts}
\usepackage[autolanguage]{numprint}
\usepackage{geometry}
\usepackage{ifoddpage}
\usepackage{lipsum}

\geometry{paperheight=11in,paperwidth=8.5in,textwidth=7.25in,textheight=9in,top=1in,bottom=1in,headsep=0.125in,footskip=0.125in,left=0.75in,right=0.5in,twoside}

\geometry{marginparsep = 0.5in}

\titlecontents{section}[5em]{}{\vspace{.1em} \hspace{-2.5em} }{}    {\hspace{.5em}\titlerule*[4pt]{.}\contentspage}
\titlecontents{subsection}[5em]{}{}{}{}

\setmainfont[Mapping=text-tex]{Calibri}
\setcounter{secnumdepth}{-1} 
\definecolor{green}{rgb}{0.3,.7,0.3}
\definecolor{blue}{rgb}{0.3, 0.3, .6}
\definecolor{white}{rgb}{1,1,1}
\definecolor{grey}{rgb}{.6,.6,.6}
\pagestyle{fancy}
\setlength{\parskip}{1.5ex}
\setlength{\parindent}{0.0in}
\voffset = 0pt
\hoffset = 0pt

%force section start with new page
\let\stdsection\section
\renewcommand\section{\newpage\stdsection}


\newcommand{\delppart}[1]{\part{#1}}
\newcommand{\delpsection}[1]{\section{#1}}
\newcommand{\delpsubsection}[1]{\subsection{#1}}
\newcommand{\delpsubsubsection}[1]{\subsubsection{#1}}
\newcommand{\delpsubsubsubsection}[0]{\subsubsubsection}
\newcommand{\bulletl}[0]{\renewcommand{\labelitemi}{$\bullet$}}
\newcommand{\checkl}[0]{\renewcommand{\labelitemi}{$\checkmark$}}
\newcommand{\figurebottom}[1]{\begin{figure}[b]#1\end{figure}}
\newcommand{\twocol}[1]{\begin{multicols}{2}{#1}\end{multicols}}
\newcommand{\greenrow}[1]{\rowcolor{green}#1}
\newcommand{\bluerow}[1]{\rowcolor{blue}#1}
\newcommand{\greyrow}[1]{\rowcolor{grey}#1}
\newcommand{\white}[1]{\color{white}#1}
\newcommand{\none}[1]{#1}


\setlength{\unitlength}{1mm}%footnote

\fancypagestyle{plain}{
\fancyhf[]{}
\fancyfoot[LE,RO]{ \normalsize  BlahBlahBlahBlah\\BlahBlahBlahBlah}
\fancyfoot[C]{- \thepage\  -}
\renewcommand{\headrulewidth}{0pt}
\renewcommand{\footrulewidth}{0.4pt}
}

\fancypagestyle{empty}{
\fancyhf[]{}
\fancyfoot[LE,RO]{ \normalsize  BlahBlahBlahBlah\\BlahBlahBlahBlah}
\fancyfoot[C]{- \thepage\  -}
\renewcommand{\headrulewidth}{0pt}
\renewcommand{\footrulewidth}{0.4pt}
}

\fancyhf{}
\renewcommand{\sectionmark}[1]{\markright{#1}}

\fancyhead[R]{\Huge \rightmark}
\fancyfoot[LE,RO]{ \normalsize BlahBlahBlahBlah\\BlahBlahBlahBlah}
\fancyfoot[C]{- \thepage\  -}

\renewcommand{\headrulewidth}{0.4pt}
\renewcommand{\footrulewidth}{0.4pt}
\renewcommand{\footrule}{%
\checkoddpage
\ifoddpage\hfill\else\fi\rule{2.5in}{\footrulewidth}\vskip\footruleskip}

\newcommand*\BPText{THIS PAGE IS INTENTIONALLY LEFT BLANK.}


\makeatletter
\renewcommand*\cleardoublepage{%
\clearpage\if@twoside \ifodd\c@page\else
\hbox{}
\vspace*{2.125in}
\begin{center}
\BPText
\end{center}
\vspace{\fill}
\thispagestyle{empty}
\newpage
\if@twocolumn\hbox{}\newpage\fi\fi\fi}
\makeatother

\newcommand{\dontbreak}[1]{\hbox{#1}}
\newcommand{\noinfo}[0]{-}
\newcommand{\defaultnum}[1]{\numprint{#1}}
\newcommand{\percentage}[1]{\numprint{#1}\%}

\titleformat{\part}[display]{\normalfont \huge\raggedleft  \vspace{0.6in} \titlerule}{}{-70pt}{#1\Huge}
\titleformat{\section}{}{}{0pt}{}


\newcommand{\defaulttabletitlemacro}[1]{\none{#1}}
\newcommand{\defaultcoltitlerowmacro}[1]{\greenrow{#1}}
\newcommand{\defaultcoltitleitemmacro}[1]{\textbf{#1}}
\newcommand{\defaultrowmacro}[1]{\none{#1}}
\newcommand{\defaultitemmacro}[1]{ \hspace*{\fill}#1}
\newcommand{\defaultrowtitlemacro}[1]{\none{#1}}
\newcommand{\defaultsumrowmacro}[1]{\greenrow{#1}}
\newcommand{\defaultsubsumrowmacro}[1]{\greyrow{#1}}
\newcommand{\defaultsubsubsumrowmacro}[1]{\greyrow{#1}}
\newcommand{\defaultsumitemmacro}[1]{\none{#1}}
\newcommand{\defaultsubsumitemmacro}[1]{\none{#1}}
\newcommand{\defaultsubsubsumitemmacro}[1]{\none{#1}}
\newcommand{\defaultdiffrowmacro}[1]{\bluerow{#1}}
\newcommand{\defaultdiffitemmacro}[1]{\hspace*{\fill}#1}
\newcommand{\defaultdifftitlemacro}[1]{\none{#1}}
\newcommand{\defaultsumtitlemacro}[1]{\none{#1}}
\newcommand{\defaultsubsumtitlemacro}[1]{\none{#1}}
\newcommand{\defaultsubsubsumtitlemacro}[1]{\none{#1}}

\newcommand{\defaultsubtabletitlemacro}[1]{ \textbf{#1}}
\newcommand{\centerit}[1]{\begin{center}\itshape{#1}\end{center}}

\NewDocumentCommand{\myrule}{O{1pt} O{3pt} O{black}}{%
\par\nobreak % don't break a page here
\vspace{0.01in} 
\kern\the\prevdepth % don't take into account the depth of the preceding line
\kern#2 % space before the rule
{\color{#3}\hrule height #1 width\hsize} % the rule
\kern#1 % space after the rule
\nointerlineskip % no additional space after the rule
}

\newcommand{\goalheader}[1]{#1\myrule[3pt][0pt][green]}
\nprounddigits{2}


\begin{document}


\part{Test Chapter One}
\lipsum[1-37]
\part{Test Chapter Two}
\lipsum[1-8]

\end{document}

Thanks!

Answer 1

I don't know if something like this is what you want:

\documentclass{book}

\newcommand*\BPText{THIS PAGE IS INTENTIONALLY LEFT BLANK.}

\makeatletter
\renewcommand*\cleardoublepage{%
  \clearpage\if@twoside\ifodd\c@page\else
  \vspace*{\fill}
  \centering
  \BPText
  \vspace{\fill}
  \thispagestyle{plain}
  \newpage
  \if@twocolumn\hbox{}\newpage\fi\fi\fi}
\makeatother

\title{The Title}
\author{The Author}

\begin{document}

\maketitle
\chapter{Test Chapter One}
\chapter{Test Chapter Two}

\end{document}

I left the original plain style for the blank pages which makes even more odd the message (those pages are not really blank: they contain some text and a page number).