Migrating only 5 Mailbox from bluehost IMAP stuck for 3 days almost.

Hi guys,

 i am trying to migrate 6 users from blue host email services via IMAP. but 3 of have synced quite nicely but reset of them stuck. now its day 3 its keep syncing no status or error . i tried power-shell report but couldn't able to find any error so far. mail box size is max 20 GB. now only 2 mail box are not sync. 

No change in items sync 

no Change in any status

no change via powershell report. 

its day 3 almost. 

Please and guide