Can't send MMS while on wifi

I have a LG V60 ThinQ 5G UW. A month or two ago, I started having an issue with sending MMS messages while on my home wifi. I can send individual texts fine, and have don't have this issue at any other time. I went into the a verizon store, they said "maybe it's the SIM card" so we switched it out. Nope, same issue. Does anyone have any idea what the issue may be?

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Re: Can't send MMS while on wifi
Customer Service Rep

We are sorry that this has been an issue for you. Not being able to send messages would be a concern for me as well. With regard to your concerns has there been any recent updates on your device prior to this occuring?