Did I miss something? 
I put up some hodl coin in April. I haven't done anything since but look at it a couple times. Now I get a message -
"no block source available - 20 weeks behind"
What happened , what do I need to do?

It is regrettable that the developer was carried away by the persons' vote that had not the most remote idea of the implications that would have his vote. This currency had a good future, but thanks to the absurd idea of voting for senseless things and without doing an analysis of the negative impact that they could have in the currency, already this is dead, because the developer does not want to accept his mistake and to amend it.

People compain and they re right but the optiminer hashrate is keeping up well.. Its around 35KH/sec; this coin is definitely not dead

What i'm most worried of is the large amount of HODL that will come in circulation in the next 2-3 months!

The number of unlocked HODLs is quite high actually. And there's another 2 million that are unlocked but not moved. So the amount that will come into circulation might not hurt the price so much.

But still trading volume is very low