Welcome to SAFE.
Although can you please ask this in the community forum.
This forum is for developers to discuss the programming of SAFE and the APPs
Here is a link to the community forum https://safenetforum.org/
MAID coin is using the omni-protocol so any BTC paper wallet is fine. Although you need enough BTC at the address to be able to pay the omni-protocol fees when you want to move the coins.