You will be fine. I use the same contact info for my prime account and seller central one. The only thing is you can't use your prime benefits for the advantage of your seller account. Other than that they are basically unrelated (the one suggestion would be don't break and TOS on either).
It's better to isolate the buyer and seller account，
At least from Amazon’s point of view, you did not benefit from the sub-account to your main account；
You will be fine. I use the same contact info for my prime account and seller central one. The only thing is you can't use your prime benefits for the advantage of your seller account. Other than that they are basically unrelated (the one suggestion would be don't break and TOS on either).
I have a normal Amazon account since 2009 and I used my same account to start FBA just last year. Didn’t have any issues and selling fine so far.
Its A9. A10 isnt a thing.
It's better to isolate the buyer and seller account， At least from Amazon’s point of view, you did not benefit from the sub-account to your main account；