Interval keeps resetting to 15 minutes after restarting the app

The interval resets to 15 minutes after restarting the app. I am running Ubuntu 18.04. I included a hardware information report in this bug report. I have tried removing all custom intervals except two, but that did not work. It puts them all back after restarting the app. I have tried uninstalling and purging the app and then reinstalling, but that did not work. I am running Wallch 4.0. I just realized that the website link under the about section takes me nowhere, so I probably will never hear from you guys.