This is a solution from Discord. I had the same syncing issue and this solution helped me. All my stakes that were staked during "not fully synced wallet" period failed after resyncing.

!!!!!!!! UPDATE !!!!!!!!!

I'm back on the correct chain, this is what I did :

1. Stop Wallet
2. Keep in dir  %APPDATA%\Compound   my :  wallet.dat , compound.conf and peer.dat   -   Delete all other files
3. Restart wallet for a full resync
4. after some times (5 min) as expected, I lost all stake and transaction after my faucet payment, but I'm like the Block Explorer sees me

Would be interesting to know if it solves problem for others (those having sync issue right now), or if I'm just being lucky.
Dont see why or how the Faucet payment could have caused this, but if others are seeing this issue right after being payed by Faucet, there might be something to investigate here (although I really dont see how it would happen).

hope this help(edited)

Remember to always backup your wallet.dat file before doing any procedures with appdata folder!

Join discord to get your answers quicker!

https://discord.gg/ayM5D7j