Is FBA and PPC allowed on individual account

Hello all,

Hope you are doing well.

If I downgrade my professional seller account to individual account without any monthly fee involved:

1- Can I still use PPC?
2- Can I keep using FBA services for UK as usual?
3- Will I be eligible for a buy box?
4- Can I keep using FBA as I am using now and FBM both types of order fulfilment (I already have some inventory at Amazon warehouse)
5- When I go back to professional account later do I have to wait to get the buy box again.

Please note that at the moment I am only looking to sell in the UK.

Many thanks in advance,

Waiting for your reply.