Hi marzouk_amr,
You should be able to download Aqua Mail from AppGallery, the appstore of Huawei. Unfortunately, at this point you have to make a new purchase from AppGallery. Please contact support on support@aqua-mail.com for more details as I am not sure at the moment, but probably they will be able to give you a refund of your Google Play purchase. This is a new use case for us so please bear with us and we will find the best solution for you.