Items are not deleting from JournalDelete table

"There are 437715 items that have been deleted from Vault Store 'Journal Store 1' but have not yet been deleted from the indexes"

same error with same numbers on a daily basis, from Journal DB.

the Journal retention is 7 days, so the items in the table no longer exist, but still - those rows are stuck and not deleted at all.

EV version : 9.0.3

any ideas what can be done here? as I found similar issue in 10.0.3, but I do not have index synch option in my version yet...

Thanks,

Sarah.