Multi Message Broadcast Struggle

Hello, I apologize in advance because this is not specifically related to a txn on the cosmos chain - but in general, I’m struggling to send a multi-message broadcast through any IBC chain. ``` Code 4 signature verification failed; please verify account number (ACCOUNT NUMBER) and chain-id (CHAIN NAME): unauthorized ``` Where CHAIN NAME and ACCOUNT NUMBER is my account number and CHAIN NAME is the respective chain name. I have verified a million times and sending a single offline signed txn works perfect. Can I get clarification on what exactly is needed in a multi message broadcast? Currently, I am simply adding the entire additional message within the message [ ] - with no additional changes from a single message broadcast (includes all signature information as I used the corresponding cli to sign the generated txn). Anything else needed - and what is this message really trying to tell me? The chain or my account doesn’t allow multi-message broadcasts? Or some part of the signature verification is failing (even though it works for a single txn broadcast?). I have also attempted to add additional signatures/sequence information but this just throws "multiple signatures…

Excerpt (1198 of 1277 characters). Read the whole post on the forum ↗

So this is just the generic signature validation failure message, it could be something else.

I’ve been pretty successful with multi messages and the IBC relayers all use them