Can I get help here for my Verizon flip phone? [View all]

I've spent a half hour trying to get help from MyVerizon support. Hopeless. Why do these companies think AI works???????? Anyway, I've gotten help here for other techy, but non-computer related things.... Here's the question I tried to send Verizon.

I don't receive most of my text messages. Instead I get "Message is not downloaded." When I open it, I see "You received a multimedia message. press Download to retrieve it's content before April 1st." If I go to MyVerizon.com I see that the message was a simple text, not a message with a picture. I've asked the person who has that phone number (as shown in MyVerizon) and they confirmed that the message was a simple text. It so happens that the simple text was part of a group mailing, if that's relevant.

My phone is a flip phone, TCL KaiOS.

I don't mind not getting texts with pictures, but I would like to be sure I get all simple texts. What can I do about this?