They claimed now that this problem/issue has been resolved.
Resolved - This incident has been resolved.
Mar 9, 20:07 UTC
Update - We are continuing to work on a fix for this issue.
Mar 9, 20:07 UTC
There's nothing change to this web wallet, it's always a buggy wallet, and anytime there are unexpected unknown errors from its users.
Poor customer supports and has different issues, I don't think why there are newcomers still using them which is prone to that risk and might losing their fund or longer time to wait for the transaction.
Open-source wallet still the best.