Long E-Mail login issue

I am unable to login to my android mobile phone using the COHE APP due to my login e-mail being too long. The e-mail becomes truncated at “.c” and I cannot complete typing in .com to my e-mail domain name. This restricts me from using my account to enroll mobile devices using the APP. Should I create another account with a shorter e-mail or can you guys resolve this on the back-end somehow?

same problem, on the forum comodo one more have this concern, although I opened a ticket it is useless … really a pity that no one can unlock this