Linking

I haven't linked/transferred my Puzzle & Dragons account between browser and smartphone, but I have transferred data many times on the main game. Since the operator is the same, the linking/transfer system should be similar... The image shows what appears when you press the account linking button in the upper right of the home screen. Linking/transferring to the browser version should be possible between DMM accounts if you log in with the same account... If you're linked via a Google account, I'm not sure, so it might be faster to contact the operator's support. There was also an item about data recovery in the menu next to account linking, so please check that too.