There are several causes to why you may not be able to access your VPS.� Some users often mistake the VPS being down when they cannot access their websites.� This would be due to apache being down which may need a restart.
More than often however, a VPS may appear offline because resources are continuously being maxed out, most likely due to memory allocation limits.� In this case it may be necessary to upgrade to the next VPS plan or add additional RAM.
You can open a support ticket to request for a analysis of your VPS to see what the issue could be.