TutorEva - AI Homework Helper beyond GPT-4

sign in issues

because I signed in on my laptop with my google account when I first got the subscription, when I try to use my husband laptop using the email address to my google account it says it is not registered I don't understand this because I paid for the subscription I should be able to use it on any computer with just my email address and password. can someone help me correct this problem am I doing it wrong.