What Messaging App are you using?

[trucksmoveamerica#AC]

Was using textra for a couple of days now, until I couldn't send messages anymore with either textra or samsung's app. It says that setting textra as default app may affect phone's ability to send or receive text messages. I did not know this until too late. Any idea how to fix this?

Try setting Samsung messages as default again. All you have to do is open Samsung messages app and select yes when it asks to set it as default. I highly doubt textra caused the issue, but who knows.