There are both a Slack and a Discord community where announcements are done in English, by the Core team. The website is currently being rebuilt to be more foreigner-friendly. I suggest that you check the Reddit for future announcements.

BTW the ROI is only virtual, any coin value would drop if everyone sold his masternode rewards.

The community is full of 350+ members on both the Discord and Slack. So what you say is only the proof that you did not dig enough into the project.

Cheers,