Huge vulnerability

After the staking of my coins expired, I did nothing and did not mine. I just waited quietly for a few days. When I reopened my wallet, my coins were gone, and there was a transfer that I had never made.

Do you have multiple wallets? because a simple explanation is each stake is by active wallet
select the wallet you staked the SYNX on
then check that if you still have issues let me know how much was staked and when in DM. Keep me updated