My p2pool node is not offline and i have updated the daemon to the latest with a blockain reindex. The block height is still weird. I'm on block 87k while the 2 block explorer are after the 190k but they have different value. Another p2pool is up with a block number in the 200k range.

To resume, al the data i can get show a different block height that mean there is a lot of fork. The dev must update the block explorer or say which fork is the good one. And maybe put some checkpoints in the wallet.

Edit:
Ok, after i have removed everything, i'm now on the same block that this explorer:
https://chainz.cryptoid.info/lgc/

Edit 2:
The node is working fine now.