I tried to sign up for Stack Overflow the other day with my email address - and got rejected. Initially it seemed to be rejected due to containing the "stack" t

I tried to sign up for Stack Overflow the other day with my email address - and got rejected. Initially it seemed to be rejected due to containing the "stack" term and being mistaken for a "temporary address", but then after a brief to-and-fro with support I'm told that it's due to a "security issue" that they won't elaborate on. Finally after 20 years I wanted to ask a question there and failed at step zero! I have no idea what specific "security" reason they dreamed up (I've never had an issue like that with it elsewhere) The irony that I might have to create a temporary address to avoid the issue being reported as due to a temporary address is too much for me so I gave up. It does indeed "suck"