Hello! Im hosting my server trough my pc so local host.. Im using port forwarding and it works Fine i already plaxed with my friends on the server.. But I turned off the server and turned it or again today and it says offline, any solution?

Did you tell the pc to run on a static IP  or by default it's dynamically assigned on turned on ?   chances are your PC has a different IP than it did yesterday.

To set a static IP address in Windows 7, 8, and 10:

1. Click Start Menu > Control Panel > Network and Sharing Center or Network and Internet > Network and Sharing Center.
2. Click Change adapter settings.
3. Right-click on Wi-Fi or Local Area Connection.
4. Click Properties.
5. Select Internet Protocol Version 4 (TCP/IPv4).
6. Click Properties. 
7. Select Use the following IP address.
8. Enter the IP address, Subnet mask, Default gateway, and DNS server.
9. Click OK.
   Your computer displays a static IP address.

Im gonna try that but it should have a static one, because the IP i joined trough 3 diferrent times still worked + the server was offline for 30 minutes then online for Hour and then again offline shouldnt it change only when turned off and on?