Pepwave BR1 won't receive SMS messages

I have been reading and researching everything in this forum and that I could find on the web. I have some SMS messages that were received normally from 2-3 months ago then they just stopped. I did not change any settings. I just updated firmware to 8.0.1 hoping this may help but it did not make a difference.

Are there any settings in the cellular WAN setup that may cause SMS not to work? I just don’t know what to change/do to make it work.

If it is relevant the USSD functions work fine.

Any help is appreciated. THank you.