Just as generic suggestions (addition to discussion):
-> good to doublecheck that platform is still supported by F-Secure solution.
Otherwise, update is not applicable maybe.
-> for except noted 'should update itself' flow - possible to try trigger receiving fresh build by reinstallaton.
Usually, fresh installation is about most recent available build.
Installation flow for Windows:
-> if concern is about databases/signatures - good to doublecheck that network connection is OK, proxy is not used or proxy is configured properly.
Each hour - solution should to check updates, but possible to check it manually:
-> if concern is about "renew subscription" or switch to another package - there are some Knowledgebase articles: