I have another problem...I have the North American SD1 with the typical 110 voltage I imagine.

This is what it says about the power on the island. What can I do to make sure the SD1 works fine?

"
"Do I need electrical adaptors for my hairdryer/radio etc.?

Electricity is 110 - 130 volts/50 cycles, similar but not identical to
the US standard. Most 60 cycle electrical appliances from the United
States will function properly, although appliances that have internal
time mechanisms will not keep the correct time and hairdryers and
curling irons may overheat if used for too long. Dual voltage
appliances from Europe and South America will need an adapter plug,
readily available on the island. Although electrical current is
generally reliable, consider using a surge regulator for sensitive
electronic devices and computers. It's a good idea to charge
underwater strobes and videos on the regulated systems at dive shops
and photo centers."