Base training : LTP seems under VT1

How long ago was your last BT event as indicated under your account name at xertonline.com?
Is that the activity you used to modify the signature?

As @wescaine mentions if you don’t plan on generating any BT events during Base you can change the Decay Method to No Decay and your signature will float up/down based only on training load changes.

Pre-base: there is no specific guidance used for the Focus of your training; the advisor simply offers a wider variety of workouts that are near your Athlete Type.
Also see this thread –
Continuous/ prebase - General - Xert Community Forum (xertonline.com)