I can't find option to Text

Yes you can. You have to logged in as one of those numbers/extensions on your iPhone to be able to text from the number.

Correct, you cannot text to / from toll free numbers.  So to text from the RC app on your phone, you will need to be logged into one of your non-toll-free numbers.   You will still be able to set your outgoing caller id to display the toll free number, but all your fax/txt/voice messages will only be those from and to the number you login as.  

Hey HOWELL,

It's possible that SMS simply has not been enabled on your new numbers yet. Please open a case so Support can take a look :)