Unable to change font with ModernCV

Question

I've been trying to change the font with modernCV for quite a while now, but nothing seems to work. I'm using LuaTex. To start with, I tried changing it from sans to roman, although the font changes, you can see that nothing is being italicized or bolded as it should be.

\documentclass[11pt,a4paper,roman]{moderncv}  

\moderncvicons{awesome}%marvosym  

% moderncv themes
\moderncvstyle{banking}                            % casual/classic/oldstyle/banking/fancy
\moderncvcolor{green}                              % blue/orange/green/red/purple/grey/black

\nopagenumbers{}                                  % uncomment to suppress automatic page numbering

% adjust the page margins
\usepackage[scale=0.75, top=2cm, bottom=2cm]{geometry}

% personal data
\name{First}{Last}                               
\address{Address}{City}{Country}
\phone[mobile]{123456}                  
\email{[email protected]}                                

%----------------------------------------------------------------------------------
%            content
%----------------------------------------------------------------------------------
\begin{document}
%-----       resume       ---------------------------------------------------------
\makecvtitle
%==============================================================================================================================
% EXPERIENCE
%==============================================================================================================================
\section{Experience}

\cventry{May 2015 -- July 2015}{Intern Research Assistant}{Institute of Whatever}{XXX, YYY}{Supervisor: Dr. ABC}{{}
\vspace{4pt}
\begin{itemize}%
\item Nice stuff.
\end{itemize}}
\vspace{7pt}


\end{document}

First image is how it looks with sans on line 1, and second is how it looks with roman. Nothing is in bold or italics as you can see.

Afterwards, I tried multiple methods to change the font, all of them did absolutely nothing:

1. I tried the two answers here: Change font used by moderncv

   \documentclass{moderncv} \usepackage{mathpazo} \renewcommand{\sfdefault}{\rmdefault}

2. The answer here with xelatex: Is there any way to use a custom font with moderncv?

   \usepackage{fontspec} \setmainfont[Ligatures=TeX]{Calibri}

3. I tried the answer here as well, as this was my main goal: Change body font in moderncv without affecting the other fonts

My original goal was to remove the italics from fields 1, 2 and 5 from CV entry (date, position and supervisor/extra info). None of those worked.

With the MWE provided on answer 3, some stuff worked but some didn't. For example, I could change the font size of the title but I could not do a single thing for the hint font, it would never change.

I would appreciate any help.

EDIT: Clarification: my original problem involves

1. Changing the whole document's font (solved, see below).

2. Changing the font in fields 1, 2 and 5 of the cventry command.

Following @Ulrike Fischer's comment, I added \setmainfont{Times New Roman} after \moderncvstyle{banking} and the first issue has been fixed. Now I get a roman font where things are italicized and bolded as they should be. However, if I add \renewcommand*{\hintfont}{\upshape}, the font for the dates stays in Italics. I cannot change its size with \renewcommand*\hintfont{\fontsize{40}{24}} either, and I have no idea how to change fields 2 and 5 to non-italic.

Edit: As noted in the comments, the way to fix this is to add \upshape before specific fields, preferably with a wrapper for cventry. Redefining does not work for me.

Answer 1

As asked in the comments I convert my comments to a (short) answer:

The banking-style is not adapted to lualatex, it loads an unsuitable font. So to change the document font add \setmainfont{Latin Modern Roman} (or some other font) after loading banking.

The \itshape is hardcoded in cventry (in moderncvbodyiii.sty). To change this you will have to add \upshape directly in the entries, e.g. \cventry{\upshape May 2015 -- July 2015}, or write some wrapper command.