Has anyone ever had this happen?

So randomly i am mining on nanopool all is going great, after 4 payouts i am waiting for the 5th, it’s late. So i go and check and my wallet was changed. I search the wallet and this is the first time it was used, will i be able to access it somehow?

Are you using the Jaxx wallet?

I’m using JAXX Wallet, and after reading your post i export my private key and backup my wallet. but! when i see the private key the wallet shows me 3 ZEC wallets, kinda strange because i never create them. (only one)
maybe its your case?