If you wish to review our service, please do so by all means.
We will respond to all of your comments and categorize the given feedback if we can confirm the issue, and keep you updated as to whether or not it is fixed.
I can do some testing for your service when I find some free time, but for now I can do it only for testnet version if that is still available.
Is there any instructions I can read before I use it, and what should be written instead of mainnet custodian url address?
Taproot is already supported on your wallet if I understand correctly or not?