Can't sign into Gosu/10FF chat as 10FF username (sign-in code never gets sent to email)

soup shared this problem 5 months ago

Title describes it. Signed up as soup on 10FF, but it won't let me sign-in as soup on the gosu chat. When I go to sign-in, it prompts me to enter the single use sign-in code sent to my email address, but it never arrives. Tried with 3 different browsers on 2 different PCs to same effect.