Hello,
I updated today some site to Joomla 4. I did that sometimes before. Today I installed on the new site Extension-Manager 8.2.1. and now I can not update to PRO. All the extension were only installed in the free-version. I tried to reinstall sometimes - no change.
What can I do?
Best regards
Peter

No, I can not reproduce it. But it still doesn't work.
I also tried with another browser.
But I can install the pro-version manually (download articles-anywhere-pro.zip and install with the Joonla-Installer).

I tried again after cleaning all caches - no change.

Very strange.
I have this problem with several other sites, e.g.

I have set the regularlabs superuser on both pages as a test.
The update then worked on the first page. But on the second page (art ...) I can log in with whatever I want, delete the cache ... again and again only the free version is installed.

Here, for example, is the message for Advcanced Module Manager:
success
Advanced Module Manager v9.4.0 has been successfully reinstalled
The Regular Labs Library v22.10.20220 has been successfully reinstalled
Regular Labs Conditions v22.10.20220 has been successfully reinstalled
info
Advanced Module Manager v9.4.0 has been successfully reinstalled

Can you do anything with it? As I said, on both sides the superuser would be set up for regularlabs.

Sorry, the site, where it does not work, is kunst-welten.de

I see that, too:
(I can not integrate a screenshot, right?)

Ok, here it is:

I press "Alle aktualisieren" and get the following screen:

Then I go "back" and get again:

When I press "Neu laden" nothing changes.

Sure: