Group messages that include Android phones keep sending individually

Has anyone successfully navigated the problem of group messages that include non-iPhone users splitting into individual messages?

I have iPhone 12 Pro and Spectrum as my provider. My wife has the same phone/plan and has not had any issues with her group messaging.

I have ensured that SMS, MMS, and Group Messages are all turned on (again, they are the same as my wife who is not having the issue).

I contacted Spectrum and they ran through a number of troubleshooting efforts without resolution.

I have attempted:

• Receiving a new e-sim
• Checking all settings in messages
• Turning on/off phone
• Turning on/off airplane mode
• Force Restart
• Ensuring phone software is up to date.

I have read a few comments about an e-sim being the problem.

has anyone successfully, and recently, had and solved this issue