The current gadgets were developed on top of an outdated technology that did not accompany the evolution of Jira or Tempo products .We have not removed the gadgets, however we are not currently fixing any bugs on them until we introduce them again with new technologies. That being said, we provide assistance on How To questions or usage.
We are gathering feedback on what new gadgets built on a newer technology could help you with or what features to include. We encourage you to help us understand your needs and use case, by opening an idea in our Portal by following the instructions here: Tempo Idea portal
There is currently an Idea in place for Gadgets on Confluence for Server pages. We welcome you to add your vote and comment with your use case https://ideas.tempo.io/ideas/T-I-336