An error occured while generating the certificate

How do I…

When I try to create a certificate for ios, I always get an error when uploading the distribution.cer file.

What is the expected result

gdevelop needs a .cer uploaded

What is the actual result

“an error occured while generating the certificate”

Related screenshots

suggestions very much appreciated, tried so many times…
thanks
Jeroen

Found the issue. For anyone experiencing the same: apparently the error notification after uploading the certification is not about that (upload), it seems to be about not having completed the next step 3)