There is no modules in selected group!

Hi there,
Totally out of ideas.
Installed Branda plugin, activated all modules,
Dashboard says 28 Active Modules
But clicking into any generates a single notice on the page
“There is no modules in selected group!”

I have disabled Oxygen and all plugins.
The hosts don’t know where to start, I cannot suggest anything.

Another plugin developer had similar problems and added a snippet for a similar issue (which I also disabled)

and I suppose it boils down to a server-side setting somewhere.

Any ideas?

And the reason is same that we are getting "$_REQUEST" array is blank on "plugins_loaded" hook and ideally this should not happen.
?
We provided the snippet to fix the issues but still whenever we require "$_REQUEST" array on "plugins_loaded" hook it is received as blank.
?
We request you to contact your Hosting provider and ask them why "$_REQUEST" array is blank on "plugins_loaded" hook.

Once “$_REQUEST” array is not blank on “plugins_loaded” hook everything will work correctly.

:-/

The page I need help with: [log in to see the link]