Here is the wallet that supports with Multi sig feature.
Have you even checked that source before you recommended this?
Copay wallet doesn't even exist anymore, and Coinbase/BitGo are not really wallets but more centralized services that support multisig feature.
I made a list of most multisig wallets excluding hardware wallets that have some issues:
More information can be found in
Multisig Wallets topic.
Thanks. I'd still recommend setting additional pass there