Missing sim card bug on app?

Does any one had this problem before. I'd install YouMail on my mobile and there the error id get. I did remove and put back my SIM card into my phone, everythings works well exept the app (when it's tiem to activate I have this error appear). I have uninstall/reinstall the app.. Im also in contact with Fizz support. But they tell me to ask in the comunity. Please help! :)


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