For Developers: You can look for existingh issues and generate PR.
For users: Raise an issue(can be a feature request)
For non-english users: In order to help us in translating this plugin Goto i18n folder and edit the .ts file and save as QRealTime_xx.ts. ('xx'starting two letters of the language)
You can do changes in plugin by going to
QGIS--> settings-->user Profiles-->open currently active profile-->python-->plugins-->QRealTime