Glad it could help.
I can't help too much more, because apparently there is something going on deeper in the system, it could even be your hoster's rules. Also your htaccess file is involved!
I had to put https into all my templates, but then apparently later had to change them back when the underlying issue was changed, in other words prepending the https led to my styling breaking rather than fixing it, lol.
And I have no idea how it all happened, honestly.
My gues might be the htaccess file, which should re-write every page request, for some reason those requests are not being re-written.
Here, consider to try out my htaccess, but this would be
without the hard-coded https in your templates, it should work. I just posted this not long ago and it straightened someone out.
Ah here is the link to the post I put it on
https://forums.modx.com/thread/104020/friendly-urls-and-migration-to-https-ssl#dis-post-559396