Not indexing email

Hello,
I upgraded to the new X1 recently after using the earlier system for 10+ years.
For some reason my emails won't index after 20th March. It says indexing every 30 minutes, I have tried re-indexing, but still no luck.
It is on my work pc which runs 24 hours so I would at least assume overnight everything would be refreshed - if the possible cause is the system is busy.
Initially this wasn't a big issue, but now as time is passing and I am searching for more recent emails, I simply don't get any results for anything after 20th March.
Some assistance would be appreciated.
Thanks
swas
I upgraded to the new X1 recently after using the earlier system for 10+ years.
For some reason my emails won't index after 20th March. It says indexing every 30 minutes, I have tried re-indexing, but still no luck.
It is on my work pc which runs 24 hours so I would at least assume overnight everything would be refreshed - if the possible cause is the system is busy.
Initially this wasn't a big issue, but now as time is passing and I am searching for more recent emails, I simply don't get any results for anything after 20th March.
Some assistance would be appreciated.
Thanks
swas