Is it possible to use mexa SDK?

Hello, we have contracts which support EIP-2771 but they don’t support EIP-4337. Can we use new SDK or not? The smart contracts were developed month ago, before you switched to new SDK as a new default.

I tried to use current dashboard at and mexa SDK but it seems that this combination is not working. I see there is a GET request to which ends up with 401 access denied error.

Is it possible to use old dashboard? Our use case is not that complex so we would like to avoid EIP-4337 when possible.

Yes you can use gasless transaction supported by EIP-2771.

You can use the gasless sdk dashboard here
and its documentation here