Why can I not reply to 5 digit text messages

[DebraKMC]

I am getting messages from the 5-digit numbers and when I go to reply to them I get a retry with a red triangle and I retry and it does not work it never works. Some of these are important like confirming my doctor's appointments and other things along those lines that are using this method now? Is there a fix for this can anyone tell me how I am able to reply to these messages

[deloused]

Remove the premium messaging block feature from your line in question in the block services section of your MyVerizon account

Blocks FAQs | Verizon Wireless

[jsantilli6686]

This did not resolve the issue. Haven't found anything that has yet.