Likely an internal Yobit issue.
I have had no issues syncing this month, or ever.

Trade on https://www.cryptopia.co.nz/Exchange?market=SMC_UNO
trustworthy operations there.

Dev doesn't need to be active on the forum.  SMC is a straight forward POW, and the code runs clean, there is little left to dev unless the community wants to hardfork in something.

2.0 has been a cluster of chaos, after more than a year of constant study.  I would like to suggest SMC holders focus on gaining insights to the following projects:

sia
library
expanse
etc
decree
factum
emc
name
btcd
doge

future details tba