of course.... the ova just continues the story from the tv series.... you shouldnt have watched the ova without watching the tv series....

You should watch the TV series 62 episodes

Then OVA 1 8 episodes
Then OVA 2 Greed Island 8 episodes
Then OVA 3 Greed Island Final 14

You shouldnt skip any since it is all sequential....

You are missing out on a lot of content if you havent watched the TV or previous ova's