Kyocera 701KC not connecting to service (Koodo)

The 701KC I bought from Kyoex came in today and it's very pretty, but I'm having issues with the phone not connecting to my service provider (Koodo). I've been in contact with Kazuto from Kyoex, but we're having issues troubleshooting, and he said he hasn't had anyone with issues on Telus/Koodo before. The phone recognizes the sim card and shows my phone number in the settings, but even if I configure the APN/turn on roaming, it doesn't work. Does anyone have any experience with getting the 701KC working on Koodo or Telus, or troubleshooting connection issues on the 701KC in general?