Hi,
I'm having a similar issue.
Alfred (v5.0.3 [2087]) appears to work for the core functions, but workflows will not trigger.
I was originally syncing via Dropbox, but I have since switched back to the default setup wrt preferences location (I followed the instructions given in your excellent help sections) as I had seen the above suggestion, and I'd been meaning to switch back. Sadly my problem perssists.
The workflows I've tried, but failed to get to trigger are: Calculate Anything, Case Converter 3, Date Calculator, Movie and TV Show Search, StrongPassword and Word Search.
I type in the trigger keyword, which works as expected; but as soon as I start to type an instruction or search term I just get the fallback search options of Google or Wikipedia.
I'm using a 2021 14" MacBook Pro, running macOS Ventura 13.0. Alfred Powerpack reports its single user license.
Any help or advice would be very gratefully received.
Many thanks.