LTC will not sync from Trezor

LTC synced perfectly with Trezor until Sept 28/29. (I started using it about a year ago)
Since then no sync with LTC, other coins are OK in both Trezor and CT
Tried to add wallet again but CT says it is already installed.
XPUB hasnt changed
Amount in Trezor is correct
CT says 0 which is a bit low