Can t edit pages

Hi, i cant edit my pages anymore. I enter to edit some page like..terms and conditions and when i save it i takes me to frontpage/index.php. Only one page i can edit..the other 2 no.

Second isssue:

I try to edit this related listings here - https://joburigorj.ro/it-webdesign/magazine-online-grafica-tipar-%C8%99i-web_i2

to be translated in romanian but i found this only in oc-content/plugins/related_ads/related_ads.php  . If i try to edit..is not working the section related ads. How do i translate this?

Ps: Do you do custom work?

@galaxy
Please follow our guide on translations:
https://osclasspoint.com/blog/how-to-translate-themes-and-plugins-b3

I did that . Im using Poedit to translate but the thing is that i cant find that string in english to edit it.

Any idea how to set my ads to apear on home page on mobile? Is there i setting that i miss? On default theme they apear but on zara not.

Latest ads are not shown on mobile version, you may find similar threads on forums.

And what about i cant edit pages no more? I build my site on a diferent server and i move it on live server. Everything is working but pages. When i try to edit any page and i click save it redirects me to  https://joburigorj.ro/oc-admin/index.php

Ps:  I can tell you now for the record that this is some kind of bug. The QR code is not showing as well after i moved my site from a server to another.

1. I cant edit pages anymore - is dot not save the page
2. QR code is not showing after the move -it has to be reinstalled  to work.

@galaxy
1) I do not think it's related to theme anyhow, check this with your hosting provider
2) Reinstall qr plugin