If you're having the error "Packet Flooding: Player Tick" there can be a number of reasons for it. It is best to make a support ticket so we can have a look, however a temporary fix can be applied.
1. Navigate to your TCAdmin Control Panel
2. Under "Configuration Files" access your server.cfg
3. Add the following lines (at the end of the file):
server.maxpacketspersecond_tick "2000"
server.maxpacketspersecond "2500"
4. Ensure your server is not running, and save the server.cfg file
If the issue persists after this, make a support ticket and we'll get to you ASAP.
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