I wonder if anyone here knows what my issue with btcpayserver is, here:

I have the following in my most recent logs:

```2023-02-16T18:23:34Z UpdateTip: new best=000000000000000000003bd3cb6f0c27b8b2d0722e954bb8bb6ac0180bda30be height=776881 version=0x2452a000 log2_work=94.007934 tx=806119764 date='2023-02-16T18:23:28Z' progress=1.000000 cache=44.4MiB(338543txo)```

i.e. up to date, but in my btcpayserver admin interface I have the popup for "Nodes are synching" and it says "NBXplorer height: 0". Not sure what changed, this was working fine until about a week ago. This problem has persisted for days at least, and I tried restarting but it didn't change.