Given the lack of clear results, the most plausible is:

Never download an RPG_REM_UZ_Full.exe that is less than 1MB. That is a downloader (likely malware). A real client is a 2GB+ archive. Always verify the SHA-256 hash against the one posted by the server admin.

View topic - The Trove and other resources - Insomnia | Forum

Just remember the golden rules: Download only from trusted Discord channels, always exclude your folder from antivirus scans, and never share your account password.