Do not know how to transfer game progress from old phone to new phone

Can someone please help me with my problem I love the game Dark Sword and I bought a new phone and I need to transfer my game progress from my old phone to my new phone.
I too would like to know what to do. I purchased a new phone yesterday and started the game only to find out I have to start from zero. Serious??? I want my i to returned please!
I also need help retrieving my save data
I cant get my first account after change device..... help meeee