Are you using CFW? If you are on stock 11.0, then that card won't work. Been blocked for a good while now.
I recommend you get the R4i Gold (r4ids.cn version)
Link:
http://www.nds-card.com/ProShow.asp?ProID=149
As long as you have the latest ReiNand release, and you make sure you are in EmuNAND and update via System Settings, you should be fine.
Current recommend FW methods are A9LH. With Luma3DS as the CFW of choice.
Plailect's A9LH Guide covers how to get there - It's a long process so you better have time set aside, and you better read every step and follow the guide as written.
Link:
https://github.com/Plailect/Guide/wiki