You'll still receive the funds, you don't lose control of the key and addresses can be reused.
This goes against best practices, reusing an address is discouraged.
Using an online wallet also is.
OP can't have any access of the private key unless the address he is using is an imported one. That is one of the cons when using blockchain's new hd wallet.
Will i still recieve funds or i have to give them a fresh adress?
Haven't you checked your wallet yet? Like what these two above me said you should receive the btc in your wallet. You can also test it if you want to.