Hi, I just joined the board. I got your confirmation Email, but the return links to complete registration were formed in a strange way,

This is what the hotlink inside the message text pointed to:

https://u2310383.ct.sendgrid.net/wf/click?upn=<with a long encrypted looking hash>

This is some kind of marketing firm.

This clearly is not your ham radio board. Have you been hacked?