To transfer your library, the simplest way to handle this is to create a library backup file on your first device, transfer that to your second device and then restore your library using it. To do this, open MobileSheetsPro on your first device, tap the three dots at the top right and then tap Settings->Backup and Restore->Backup Library. This will generate a .msb file in the folder you select which can be on the device or in the cloud. If you selected a local folder, transfer the file from that folder to the second device. Open MobileSheetsPro on the new tablet, then go to Settings->Backup and Restore->Restore Library from Backup. After the restore completes, you will have access to your entire library on that device. Let me know if you have any questions about this.
To keep the devices in sync after the initial library backup and restore, you can use the Sync Library->Sync to another device feature.
Mike
To keep the devices in sync after the initial library backup and restore, you can use the Sync Library->Sync to another device feature.
Mike