Sorry you haven’t had a reply from one of the support team - We saw that Paul was helping you so didn’t feel the need to intervene.
There have been a couple of similar posts which may help:
Bounce back loan interest payments
How do I record the bounce back loan?
As far as I was aware there are no repayments or interest to be added in the first year of the loan anyway so I wouldn’t worry to much about it until you need to.
In regards to the interest, this post should explain: Accounting for loans