Chat doesnt show the last messages

I often Have this problem, at least once a day and it's becoming one of the biggest frustration to me.

When I open a circle chat, messages are not up to dates. I can't see the last ones. For exemple I receive a notification with a message but on the chat I am stuck with last messages from last week

Exemple in this circle, last message is from the 14th. i received a message from Fabien on this chat and can't see it

Also yesterday I wrote a few messages that werent posted in the end