Check mark icon on FB messenger is missing!

Hello!

Instead of any check mark (sent/delivered) the only thing I see when i send a message is a written “sent”. The icon/graphic for check marks is missing completely. I have this since a couple month already and I’m really really tired of it. I reinstalled the app multiple times and keep it and IOS always updated. It also seems like nobody else has this problem, since I can’t find help on google…

I hope somebody can help me out here 🙏🏼

Pete