I have a similar question and need to update my login (no longer having access to the previous email account) but need the FUMA results to complete some outstanding manuscripts. When I sent the email to the support email, I got the following.
"Hello,
Thank you for your message.
This email inbox is NOT regularly monitored. For any issues related to FUMA,
please post your questions on https://groups.google.com/g/fuma-gwas-users. Otherwise,
your questions will NOT be answered.
Thank you,
FUMA Team"