Unhappy [Q] obb endless problems (link2sd,rktools, and tablet users may visit)

So this is my first post on this forum and many thanks to all users hee which help me and guide for modifying my android phone since gingerbread.

Today my gadget is skyworth S7 with 4.0.4 version and it's been a while since i played several games with obb files without any problems.

So one day i upgraded my device to 4.1.1 and flashing my parameter storage into 2.5 gb using rktools ( internal storage 2.5 gb, sdcard 8gb, and NAND flash around 50mb), then i cannot play the apk+obb file anymore..
Finally i downgrade again my version to 4.0.4 but still i can't play the games with obb ( my obb folder still on sdcard/android/obb folder

Last time i check my apps with link2sd, the apk, lib, dex, and even obb files are detected as linked apk. My question is how does this happen? Im so frustrated right now and almost 3 weeks i cannot solve this.

Btw my S7 is rooted and i hope you guys can give some explanation for my problems. Sorry for bad post really.

Regards from Indonesia.

Sent from my S7 using xda app-developers app