Can't receive pictures in text messages

 I am not able to receive pictures sent to me through text since switching to Visible.  I have a Samsung S21 and so do the people sending pics to me.  They are using regular Verizon service also.  The message I get instead of a picture is "You could not receive HTTP-FT https://ftcontentservice.rcs.mnc......"  How do I fix this to get pictures?