The SRO5000INT should be in no more than 6.5" of water. Anything above that and you will have overflow issues.
Epoxy will also cause overflowing issues so that will need to be removed from the tank via carbon and water changes. It make take a couple of weeks to completely remove that from the system. Once the skimmer is in normal depth and the epoxy residue has been removed from the water column, the skimmer will stop overflowing.