Seems they get back with selling again. They just released an update today:
2.7.5(2019-10-12)
* Added: PHP 7.3 support
* Added: Add Streamer/Server via CMS
* Added: NVIDIA GPU Transcoding support
* Added: Ubuntu 18.04 Support, Ubuntu 14.04 discontinued for new releases
* Added: MAG interface localization for EX-YU language
* Added: Event to force image update on MAG (check manageEvents page)
* Added: Event to force MAG to play specific channel
* Added: Event to force updating list of channels for mag
* Added: Event to force reloading portal for some specific MAG
* Added: Event to Cut Off some MAG device from portal
* Added: Support for MAG42x
* Added: In Device add/edit possibility to choose for every device whether to use http or https (for mag devices only)
* Added: VOD Search on MAG devices
* Added: GeoIP2 database support
* Added: In manageMagSetting possibility to exclude category ALL
* Added: channelTypeOrder - Order Channel Types/Genres on stalker devices
* Added: Return to favorite list after restarting MAG devices if previously was in favorites
* Added: in Movie Types field (TV yes/no) in order to get correct TMDB covers and info
* Changed: If on uploadM3U there are duplicate names, upload will proceed instead of fail
* Changed: massEditChannels, added more fields, fixed bugs in transcode bitrate and recording length
* Fixed: MAG322 new firmware support
* Fixed: Channel switching with ch up/down buttons in favorite list
* Fixed: Movie ordering by id, name, year and tmdb rating
2.7.5(2019-10-12)
* Added: PHP 7.3 support
* Added: Add Streamer/Server via CMS
* Added: NVIDIA GPU Transcoding support
* Added: Ubuntu 18.04 Support, Ubuntu 14.04 discontinued for new releases
* Added: MAG interface localization for EX-YU language
* Added: Event to force image update on MAG (check manageEvents page)
* Added: Event to force MAG to play specific channel
* Added: Event to force updating list of channels for mag
* Added: Event to force reloading portal for some specific MAG
* Added: Event to Cut Off some MAG device from portal
* Added: Support for MAG42x
* Added: In Device add/edit possibility to choose for every device whether to use http or https (for mag devices only)
* Added: VOD Search on MAG devices
* Added: GeoIP2 database support
* Added: In manageMagSetting possibility to exclude category ALL
* Added: channelTypeOrder - Order Channel Types/Genres on stalker devices
* Added: Return to favorite list after restarting MAG devices if previously was in favorites
* Added: in Movie Types field (TV yes/no) in order to get correct TMDB covers and info
* Changed: If on uploadM3U there are duplicate names, upload will proceed instead of fail
* Changed: massEditChannels, added more fields, fixed bugs in transcode bitrate and recording length
* Fixed: MAG322 new firmware support
* Fixed: Channel switching with ch up/down buttons in favorite list
* Fixed: Movie ordering by id, name, year and tmdb rating