Instead of upgrading my account, I somehow created a second account with the same email address

I upgraded my Zoom account. Instead of upgrading my account, Zoom created a second account with the same email address as the user name. Now when I start a meeting, I don't know which account I'll be using and whether the meeting will have to end after 30 minutes. I would delete the original profile, but I'm nervous about Zoom software quality. (I am sure that I specified a pay-per-month plan, but Zoom charged me for the whole year in advance, which I did not expect and did not intend to consent to.) Now I never know which account I am signing in to when I launch zoom. thank goodness I used different photos for the profiles.

Can I delete my original (free) account with 100% confidence that I won't be deleting the paid account too, and flushing away a year's prepayment? The Zoom chatbot was flummoxed by this question.