Digital Ocean - Node offline

My two nodes worked just fine for three months now they are offline and i can’t find the reason.
Can someone be so kind to help me to solve this issue?

Thanks in advance.

Problem solved.
The nodes were installed with one click but the automatic vesions update caused some problems with the DB and the machine ran out of HD space.
Had to follow the tutorial

I have the same issue with DO nodes showing offline. I saw the manual download you did but it shows for Google instead of Digital Ocean. Did you follow the same steps as per tutorial for DO?