Don't worry about the "Investigate" status, your nodes are still counted for reward. We just flag those cases to review.
Q: How to remove gateway? I want to create new gateway but do not conflict with the old ones on website?
If you don't want to delete your VPS and create a new one, you can run 'rm -rf /massbit', reboot your node, then install a new installation script from the web portal.
Q: Messages "Gateway status failed/investigated/staked is not correct"
It seems like you reuse the same installation script on a different host/vm. If you create a new VM/host, make sure you create a new node/gateway in the web portal and copy the new installation script.
Q: "Benchmark check:Percent of requests that latency lower than 500ms: 0%, average latency: ...."
It means your node/gateway did not pass the performance check. 95% of performance check traffic must be under 500ms.
Q: Verifying with message: "Failed at step checkCall, err: deadline has elapsed." or curl: (22) The requested URL returned error: 404 Not Found
I would suggest terminating and creating a new host/vm. Make sure you create a new node/gateway in the web portal and copy/run the new installation script.
Q: I met 405 (not allowed)/502 (bad gateway)/nginx.pid error code. What does it means?
I would suggest terminating and creating a new host/vm. Make sure you create a new node/gateway in the web portal and copy/run the new installation script.