Who is your carrier? I have Verizon and none of my phones on my account which is mine and my husband's note8, my note9 and lg v20 couldn't receive or send texts from midnight to around a little after 10am today. Don't know what was going on. I was reading online that some Verizon customers couldn't even recieve or make calls today also. Working fine now.
I’m on Tmobile and all my notifications and permissions are turned on. I’m thinking it may be an RCS issue since TMobile is switching to rcs messaging.