Hey @towngirl Thanks for the question. hopefully we can get you sorted. Apologies that we are only replying 3 days late.
Are you using the stock messaging app that came with your Priv? Called "Messages".
If you open it and tap the 3 dots at the top right corner and select "Settings". Then look at the bottom of the screen for the "Advanced" Settings. In there, make sure the "Auto Download MMS" is enabled.
That's all I can think of right now. Were SMS messages working fine for the past couple weeks? Have you changed anything recently? Like on holiday in another country ect.