Problem with OpenServer 6.4.6: Broken domain after changing IP, now stuck in error state

[remenikomer]

Environment: OpenServer 6.4.6, Windows 10.
Issue Summary: After changing the IP address for a local domain in the OpenServer panel, the domain became permanently broken, is displayed in red, and the service's internal DNS/DHCP appears to be corrupted.
Steps to Reproduce:

1. In the OpenServer panel, I modified the IP address for the domain api.project.local from 127.0.1.11 to 127.0.0.1.
2. Restarted the OpenServer services.
3. Since then, the domain is shown with a red error status in the panel.

Current Symptoms:
• The domain api.project.local is stuck in a red error state in the OpenServer panel.
• OpenServer no longer adds ANY domains from OSPanel\home\ to the Windows hosts file. The file updates (timestamp changes), but entries are missing.
• Manually adding the domain to hosts is ineffective — OpenServer removes it on restart.
• Deleting the website folder from OSPanel\home\ does not remove the domain entry from the panel. It remains as a red/"ghost" entry.
• Browser requests to the domain resolve to an external/public IP instead of the local server.
• Apache configs in ...\modules\Apache\conf\httpd.conf are auto-rewritten, making manual edits useless.

What Has NOT Worked:
• Resetting OpenServer settings via its options.
• Clearing DNS cache (ipconfig /flushdns, browser DNS).
• Checking the Windows Registry for orphaned entries.
• Renaming the website folder — a new domain appears for the new name, but the old one remains broken in red.
• Error logs (OSPanel\logs) show no relevant entries for this issue.
Core Question: It seems OpenServer's internal configuration or DNS/DHCP service is corrupted. How can I diagnose the root cause or perform a complete reset of its domain/host configuration to fix this?