To start with you'd need to check the original transaction. Right click in Electrum and select "details".
- Then check the "status", it should have at least 1 confirmation.
- Then check the "outputs" and make sure that the address you sent to is actually the address you were supposed to send the coins to. (Note: If there are two addresses shown, the one highlighted yellow is your change address)
Then I find out they no longer take bitcoin even though everyone I spoke to during the ordering process knew I was using it so it's possible that wallet is no longer valid. So then what?
Wallets don't become "invalid"... They will remain "valid" forever. However, if they're using a payment processor, then it might be that the payment processor no longer processes any funds sent to a certain address after it has been used. However, they should still be able to recover the funds as they should still have the private keys.
I'm not sure if they looked and I'm waiting for them to give me the wallet number to see if I sent it to the wrong place or for them to track it.
Do you not have a record of the address you were supposed to send coins to?
I called Coinbase and they can't help because I didn't pay from coinbase. He couldn't even tell me for sure that I heard if the money is not claimed in 30 days it comes back to me. Would that happen if a wallet is no longer valid?
I don't know where you heard that... but if the transaction has been confirmed, those coins are not coming back to you.
They just ate the cost and sent me what I ordered and if they don't care about the money I don't, except if I sent to the wrong place and that's on me.
So they went ahead and sent your item?
That's very generous of them...