CashMe App

I stumbled upon the CashMe app a few days ago and decided to try it out. Signing up with my e-mail was not an issue but then it goes to the next screen which prompts me to link with my phone to protect my cashback. The field in where I'm supposed to type in my phone number already has a "+60" in it. I have typed in my phone number after the +60 and a prompt comes up that +60(and my phone number) is not a real phone number. I've done it without the +60 and it won't accept that number either. Has anyone else succeeded in using this app?