Problem with migration from Lightroom Classic to Lightroom CC

Hi,

I think I have a problem with the migration from Lightroom Classic to Lightroom CC.

In Lightroom CC it seems that the synchronization is in process as the small icon is turning, but the number of “Syncing 17660 Photos” as not change for the last 4 hours. Prior I did the following:

- Followed the suggest pre-steps for migration

- Started the migration from CC, but it stopped after 75% (I waited 14 hours, but no activity on the hard disk or any information indication progress/problems)

- I closed CC to restart the migration, but is told that a migration in in progress.

- In CC it seems the synchronization is in progress as mentioned, but I can’t see that updates and only one picture is showed in my albums

Please advice