The predecessor to Digimon Masters, Digimon RPG, is also still running in Korea (nearing 20 years later) to the best of our knowledge, even though the English equivalent, Digimon Battle, closed years ago. They are announcing this now for people who enjoy Digimon Masters so there is no confusion about their plans. They provided one screenshot of the remaster, at it's current point in development (at the top.) They're taking into account comments from the player community that they've been getting since last year about issues they have with the game as it currently exists. They are currently developing it and the new version should be ready by the second half of next year. They have no plans to close Digimon Masters and everything will be remastered and continue on with Unity Engine. They state that the game as it currently exists has caused problems in providing a quality game as time has gone on.
While Digimon Super Rumble is akin to a sequel to Digimon Masters, they have a large audience of people that play Digimon Masters and enjoy it.
Also, it is worth to check out for updates - most of todays games have the automatic patches installation system on startup if internet connection. It is possible that your PC just does not have enough performance and the game may not work correctly. They've announced (the link is geolocked to Korea) that Digimon Masters will be remastered (refreshed/upgraded) for current players. If Digimon Masters Online often crashes to the desktop, try to reduce quality of the graphics. After the news of Digimon Super Rumble yesterday, Move Games wasn't done.
