I have lost books

[#1]

Hi there,

I think my problem is common.

I  tried to transfer books between two devices.  Because I don't remember any IDs I couldn't open some of the purchased books on the second device.

After I returned to my first device the same books were also "broken".  I couldn't restore them.  I think I have different books with different "users".
I have no clue how to restore them.

What can I do?

Many thanks

[#2]

Nobody can know your IDs if do you not knows that. You can ask the reseller how has order the eBooks. But Adobe has no acess the ebooks also nothing the other useders over this forum.