Canon 5D Shutter actuation problem with Sea&Sea Housing

Im in Asia using an older rig since I mostly use video. The canon 5D shoots above water but will not actuate underwater.

Ive tried this with 2 lenses. Sometimes it works most times it does not. Ive set the camera to spot focus because the manual focus ring got lost. There is plenty of light and ive tried several exposures and auto.

ast option is to set on manual ficus and preset distance.

Any suggestions?

thank you

Try it on manual focus and see if it works...could be that the lens/port combination you have is not the right dimensions to allow the camera to (easily) focus, and it won't shoot until it gets a focus lock.