I am really hesitating to dump my current Campaign of Notary which will probably give me less in 3 months than a week of deep onion
But first i need to be sure Deep Onion accepts me, is there a way to know before jumping in?
Hi airdrop is open for everyone. They don't have a quota for the number of participants. Just be sure to read all the rules regarding airdrop before you apply and everything else will be fine

I heard that so many people have been refused, even some heroe accounts so i worry .
When do we know if we are accepted ? After the first week wearing the signature ( so free advertising without being sure to be accepted ?)
You can't know you are accepted or will be accepted prior to signing up and participating. You need to go through the steps and wait for the review process. Burst posting will disqualify you which I suspect may be the case on your first application. But they continually review applicants as long as they are involved and participate in the community!