At one point they changed addresses to a new segwit starting with 3...
It's weird, I also have an account there, which I didn't use for a long time. The last withdraw which I made is from Jully 2017. yet I regularly reactivated the wallet installing the Xapo app and activate it through a phone number. Good thing that I am withdrawn all amount from there, so they did not confiscate anything due to my long inactivity on account.
https://www.blockchain.com/btc/address/3EtHJ4DKLNBbfYnjJug17GFqJ3GuE4bsbd
This one shows 0 balance, while they are implying that my account has some BTC which isn't even worth a dollar. I cannot understand whether they are f**cking with me or not. The address I have shows 1.7mBTC, they imply I have a few bits only and at the same time they send me an empty address?