Currently we have 135 nodes enabled, so probably is something related to ihost or your specific masternode... Better to open a ticket with ihost. Remember that you can also try Pecunia, looks like the users have more stability.
We run many different nodes on ihost. Some run without issues, other need a lot of TLC and some report issues when there are not any.
Pecunia seems more stable just wish they would get there paypal/card payment sorted.