After 13 years and 25 million downloads later, Firefox has officially removed FireFTP and FireSSH support from the browser. Thus, I've ended support / development of the addons. I recommend switching to Waterfox to continue using the addons.
Universal SSH Key Manager Status Details
Universal SSH Key Manager Alternatives
SaaSHub's Down Detector checks the status of services automatically and regularly. However, we cannot promise 100% accuracy. That is why we depend on user reported issues as well. The Universal SSH Key Manager status here can help you determine if there is a global outage and Universal SSH Key Manager is down for everyone or it is just you that is experiencing problems. Please always report any issues to help others know the current status.