Wax Proxy Failed and missing transactions

Describe the problem:
I just added my Wax wallet. 50% of the time I try to sync it, I get the error “proxy failed”. When it does work, I get only part of the transactions. Is this API fully functional?

Which exchange/wallet is this regarding?
Wax wallet

How did you import data into this wallet?
API

What have you tried to fix this so far?
Nothing

Have exactly the same problem.
Already spent few days at adding transactions manually and my wallet didn’t import over 1000 transactions.
It works well for my non custodial wallets created with a custom name, but my Wax Cloud Wallet is not importing everything and it is a shame after paying over 200€ to have to add so many transactions manually.