Hello Joseph, Thank you for choosing TrafficSchool.com for your traffic safety needs. Excessive logout issues are due to a few different reasons. For security reasons websites have an automatic logout timer that logs out users automatically due to inactivity. Of course, this should not be happening every 90 seconds. If you are experiencing a lot of log-outs of different websites, it could be a fault with your browser or a browser plugin. Incognito or Private Browsing also may delete cookies much more regularly, which means more logins. We recommend logging into our course using one of the major browsers, such as Chrome, Safari, Firefox, Opera, or Edge. Our course has been tested in these browsers and should function quite well, on any desktop, mobile phone, or tablet. Also, please make sure you are not blocking cookies and that you are running in a standard browsing mode. If you continue to have issues, please let us know and we'll be happy to contact you directly to troubleshoot further. TrafficSchool.com-TVS #E1393 appreciates your business. Have a wonderful day!!