Thanks for the fast reply.
My Bitcoin core is not running in parallel to the armory (it gives me error when trying to run both of them together) but the bitcoin core is indeed updated with the latest blocks from today.
What should I do?
Run Bitcoin Core manually. First stop both Bitcoin Core and Armory. Then start Armory and go to File > Settings and uncheck the option "Let Armory run Bitcoin Core in the background". Then stop Armory. Start Bitcoin Core and let it fully sync. Then start Armory again.