Do you have MCOC installed on the phone ?I thought problem is that cannot even install game because no Google PlayStore on Huawei.
So why can’t you use your Kabam ID in order to login on Huawei phone?If you only used Google Play account to login to game before (not Kabam ID), you will need to use another device that does support Google, sign into your Google Play on there, then create a Kabam ID in-game on it and attach Kabam ID to that game account that was logged in with Google.Then you can use that Kabam ID afterwards on your Huawei phone. (just remove all that info from temporary phone you borrowed to do that).