UPDATE: 15th Jan 2019
We're happy to announce that the fix for this issue has been released, and will be rolling its way out to everyone on Google Play over the next 24 hours. Please note that it can take some time for new updates to reach all players, so if you can't see it yet please be patient - it will appear for you soon!
UPDATE: 14th Jan 2019
Good news: the team have identified the cause of this issue and are working on a fix. We hope to have more information about the release date of the update containing this fix soon - this information will be posted here.
ORIGINAL UPDATE: 11th Jan 2019
We are aware that some players on Huawei and Honor devices are having problems with the game after updating their device's software, and while we investigate we have temporarily disabled these devices from being able to download the game. Once we fix the issue the game will be made available on these devices again.
We don't currently have a timeline for when this fix will be released, but further updates will be posted here when we have them. Thanks for your patience in the meantime.