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I don't seem to have the private key to that wallet. I am still trying to figure out where I saved those keys.

Ah damn.

Well if you're keen to try again, consider using WAX Cloud Wallet.

https://leofinance.io/@forexbrokr/how-to-get-a-wax-wallet-address-wax-cloud-wallet

It just uses Discord, FB etc to sign up/login and they hold your keys.

Makes it much easier for just small stuff that you might forget about :)