First of all, the issue is not related to GetAllMyLinks, as the problem appears to be with OnlyFans.

There could be several reasons for this:

1°) You may have entered the link incorrectly (e.g., an incorrect username, a typo in the OnlyFans URL, or issues with the https:// redirection).

2°) The OnlyFans page might have blocked access from your country or IP address. To check this, go to your Settings, then Privacy and Safety, and scroll down to Block by Country. There, you can see if any countries or regions are blocked.