I am a verry big noob when it comes to bitcoin.
With all your misunderstandings in everyone's reply, I think this quote is the main issue here.
The first thing you need to learn is: "
Bitcoin doesn't work like a bank"
Addresses aren't issued by a main server, it's created by your wallet based from your private keys from your seed phrase.
If you just imported an address and not generate it from a private key or seed, you'll end up with a read-only (
watching-only) wallet.
Without the private key of an address, a person cannot spend from that address. (
it's labeled "watching-only" for a literal reason)
Your wallet is not like a bank account either, that's only a storage for your private keys/addresses and the necessary features to spend and/or receive bitcoins.
There's no copy of it in any server, it's solely stored in your PC or Phone.
So, the developers don't have access to "
your wallet", that means that they can't do anything if you ever lost your funds while using the wallet.