If you have a confidential issue, such as a security issue, you must report it to the developers confidentially by sending an email to tools.ultraviolettoolforge.org with the details of the issue. See mw:Reporting security bugs#What to include in a security issue report for more information on what a security report should have.
Before creating a new section, please look for your issue on the talk page first to avoid duplicates. If you would like to report a bug, please see Wikipedia:RedWarn/Documentation/Troubleshooting first for basic troubleshooting information. If this hasn't solved your problem, structure your bug report properly for us to help in the best way possible.