Is my ADA safe?

Yes, there is no risk to staking ADA. You must never send ADA to an address to stake. You simply search PIXEL on your wallet and hit delegate. You may pay a small fee, and deposit 2 ADA.
THE #1 RULE is never share your seed phrase

How?

Watch our video on how to stake with the official lightweight wallet.
Alternatively you could click here

Useful Links

pool.pm shows realtime pool updates (recommended)
adapools.org Pixel Pool performance
cardanoscan.io Pixel Pool performance
pool.vet shows some debug information for Pixel Pool
pooltool.io Pixel Pool performance