Make sure you have a fully verified account and it's aged quite well and better still, it's with your details.
Paypal takes a closer look on subscriptions, and if they look tad bit suspicious, you might lose all the subscriptions and perhaps your paypal account.
Subscriptions tend to be more high risk, and also you didn't mention what kind of product you're selling. Make sure everything adds up in the eyes of paypal and also, call them up and talk to them about it, so that there will be notes on your account about it, which means there is a higher chance that this thing in legit in their accounts...
A better way to go with this is to get a 3rd party merchant account like 2checkout.