Navigate to %APPDATA%\SDL\SDL Trados Studio\14.0.0.0. Delete the Language References folder. This specific build has a bug where language pairs cache incorrectly. Deleting this forces a rebuild and makes the TM lookup faster than Trados 2024.
Here is the economic reality: The "full" version implies a perpetual license. In 2017, you paid once and owned it forever.
If you bought the 1411001018573 build back in 2018, you have spent $0 on software in the last 7 years, whereas a new user would have spent ~$3,700 on subscriptions. That is 3.7x better for your bottom line.
Modern Trados freezes if the RWS AppStore is down. Build 1411001018573 only relies on standard Windows services. You install plugins via .sdlplugin files locally. No phoning home.