Messages unable to send

Curious is anyone has any answers because google is not being helpful.

I don’t always have Facebook or messenger installed on my phone. But my husband is usually always sending me reels. If I don’t log in to the messenger app at least every 30 days it gives him an error saying the messages can not go through and then I have to log back in so he can keep sending videos.

We like to watch them together that’s why he doesn’t just text them to me. Usually at the end of the day we’ll watch all the videos he’s sent me during the day and we can laugh together. And it suck’s when we don’t realize the 30 days are up and the videos from the day didn’t go through 💔