Synereo LTD is still developing RChain.
Where do they say that? Could you provide a link, please?
Synereo LTD's CEO, Dor Konforty, has stated this multiple times along with many other employees of Synereo LTD. Do NOT play stupid. This is NOT a game. Stop trying to trick people into giving you money for something that is NOT legally yours. The ones who give you their money will end up hurt the most.
If you do not believe me, join Synereo's Slack channel and ask them yourself.
I am active in synereo slack and Dor never even suggested they might develop rchain. He said rchain, being open source, is one option they might migrate to in the future. What you may be referring to is Dor's statement that there was no decision by the board to not build rchain on December 12th.
RChain is NOT Synereo IP since greg's design resulted from the Casper POS research funded by the Ethereum Foundation.