@OP, seeing that you've been a member of this forum since 2013, already is a good pointer that you just a forum newbie and not a Bitcoin newbie.
I was thinking about a virus maybe, that might have drained my PC wallet. But it doesn't make much sense because the importing it to android has different ID. The IDs should be the same, don't they?
By "ID", I want to believe you mean "Address", if I am right in my assumptions, then Yes, your bitcoin address on your bitcoin.com pc wallet should be the same as that you've just imported to your android device, if the address is different, then that a pointer to -
Seed phrase or private key error - this is means you might be making a mistake while typing in your seed phrase or mistake with the private key you saved.
But in the case where the address are the same but no bitcoin in your wallet, you have two possible issues here, but first, you need to check the address on block explorer to verify if the address actually holds bitcoins ~
- 1. If there are no bitcoin in the address, then maybe like you said, you wallet has been hacked and your bitcoins drained, try checking the transaction history in tht block explorer, maybe you will see the address where your coins were sent to.
- 2. If the address still holds your bitcoins based on information on the block explorer, then my guess is that, the problem might be a syncing issue on the Android wallet, some wallets (most especially bitcoin wallet) takes some time to sync with the blockchain, this process can also take alot of time if you have a bad network, so my advice is that you give the wallet time to sync with the bitcoin blockchain, and also check your network to make sure it's strong and fast enough.