> For the complete documentation index, see [llms.txt](https://cubo-1.gitbook.io/cubo-protocol-v0.1/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://cubo-1.gitbook.io/cubo-protocol-v0.1/other/troubleshooting.md).

# Troubleshooting

If you're on Polygon already and still see this error "Wrong network, please try Polygon! Click here to change". You might need to change your RPC url in Metamask.

Go to Metamask's Settings > Networks > Polygon (mainnet) > change RPC url to "<https://polygon-rpc.com>". That's the RPC advised by Polygon themselves.

After that refresh Cubo app with CTRL/CMD + SHIFT + R

If this doesn't fix the problem, please contact us on Discord and use the #bug-report channel.