My company has some consultant developers that use Mattermost, and they wanted to add me to their project, but when I signed up to join Mattermost, Mattermost never sent me a verification email. Even when I clicked “resend email,” I received no email. I checked all folders in my email account including spam. I also tried creating a new account with the same email address, but I received a “this account is already taken” message. Where or who can help me with this problem? It looks like they’ve had this issue in the past.