Problem with saveing on R4i card...

HiI bought my NDS and R4i SDHC card two days ago. Ewerything would be fine if not for a problem with saving games.
After leaving a game the saves are gone eventhough save file is present. I've tried about 10 games...
What is wrong and what can I do???

Replying to #1

get a new card as you have a bad clone

I forgot to write that I have a NDS i XL. Dos it have any mining for such card?

Replying to #3

i dont know anything about your card apart from the fact its a clone id suggest using ysmenu

Tried YM already. Keep geting Unsuported DLSI eror :(