I put a few bitcoins in btc.com in 2018 and I went to log in and the wallet address does not exist.
are you saying your login credentials at
https://wallet.btc.com/ work---but the wallet it decrypts is empty? are you unable to log in?
The address does not even register on block explorer. Any ideas? I have the original transaction receipt and all and shows the coins in my wallet. Did btc.com make temp addresses or something.
what do you mean by "original transaction receipt"?
how did you acquire the bitcoins originally---a bitcoin ATM or something? is that what you mean by "receipt", a paper receipt?
when you say the address doesn't register on a block explorer, can you specify what the first few characters of the address are?
don't share the whole string yet, and definitely don't share anything that says "private key".