If I recall correctly, there is a rule in there somewhere to disable the pop-up for reoccurring donors. I think there is an email address to write to if this isn’t working correctly for you. I’m on my phone, so it isn’t easy to track down, but there have been previous forum posts with more details.
write to donations@freecodecamp.org, the donation process has changed various times and various ways don’t make the association of donation to your account