@Gabb Was it just that US roaming option missing?
Try to use a different browser or Incognito mode or try on another device. It should be just a browser issue
If it still does not work, load enough fund into My Account first, then open a ticket with PM Support and ask the to manually buy the add-on for you
1. If you have access to My account: At https://publicmobile.ca/chatbot.
Start by typing "Submit a ticket", then click "Contact Us", Then click "Other", then click "Click here to submit a ticket ↗"
2. If you don't have access to My Account or have trouble with Chatbot: Private message CS Agent at:
https://productioncommunity.publicmobile.ca/t5/notes/composepage/note-to-user-id/22437
**Monitor your Community inbox (envelope icon on the top right) after the ticket is opened. CS Agent will reply you there