Cabola

As an admin I can see the fields on my own and others profiles.
As a regular user, I cannot see any fields when I go to my profile and click "edit profile" with any kind of custom setting for the groups that can access profile fields, even if I select all of them which should equal the "All" setting. It will only show with "All" selected. Which makes the plugin pointless, since that behavior is the same as without the plugin.
See video here: https://puu.sh/sJNrj/8f69a4597f.mp4
 

Plugin is available on marketplace:
 

I will install it to make some tests.

yay finally approved!

​Then it's a consequence of how it interacts with the IPB framework. Whatever the case, the problem lies within your code and your code is what would have to be adjusted.
I don't want to seem hostile or evasive, it's just not my problem. I can't help you with errors being thrown in your custom code. I don't guarantee that all code will immediately work without modification. I just give you the tools to make it possible.

this is a must have!

I was going to post to saying "so you have to buy the mod again?" but then I started thinking. IPB v4 is a completely new coding, which means all the addons have to be re-written. So of course they should be entitled to charge you for getting the mod again, tho most modders either give you an discount for upgrading or let you do it for free.
Either way I'm also still getting this mod once I upgrade my forum to v4!