Are you using easy roam? 

Does calling or data work? 

Are you able to manually select a different roaming carrier in your network settings? 

Everything is working just cannot send a message.

Try roaming with another carrier. It may be an issue with the carrier you’re currently on. 

Nope. I tried all 3 and still not working

Try your sim in a travel mate's phone and see if texting works

Hi there, @Paula 84  We have looked into your account, and you don’t have all the roaming add-ons added to your account, That is why you are not able to roam. You will need to add them in your Sefl serve.. It should fix your issue right away. 

Here are two helpful articles: 

If all the roaming add-ons are not on the account could the OP use roaming data or calling with only texting not working? @Boa_Guy Koodo 

Great question @Denis !! OP has Voice Roaming active on the account.. Nothing else, Missing Easy Roam International and US, Also missing DATA Roaming.  There is no DATA or Voice call made at all. So if OP used DATA it was over WIFI.  Edit: OP would at least need DATA Roaming and Voice Roaming to be able to roam PPU. 

Hope this helps.