After attempting to edit the emails that go to the user, the advertiser, and the admins, I notice that after hitting apply, save and close, it does not save any of the changes that were made.
carlfarring It seems to be issue here, I'm checking with our developer to get it fixed.
Kindly wait.
UPDATE:
You can backup your site and install this version: https://drive.google.com/file/d/1PAGCwsc8glaOHpUucYj7R5zGUdDVky7b/view?usp=share_link
I did download it's the latest from you come however before I install it I did have ManhNV provide a fix for the problem I was having not able not able to upload banner ads. He did fix it I just wanna make sure I installed if I install the version that you have for the other fix that it doesn't override the work already done.
carlfarring You can backup your site first before installing or clone your site to a dev/test site to test this version.