I can't get my apk files to work anymore, so I contacted someone else and hope he'll make the ports for the game from now on.
You can find his post for the last Renryuu update here https://sensitiveusername.blogspot.com/2019/09/renryuu-ascension-v190920smoother... or download directly at https://mega.nz/#!0FVUjKKR!Zv4Iz468bM164GnIHCE1SOMCpBpSlT6nNy7Fiu-vFOY