Level/Exp Stucked after CwCheat. How to unlock?

Playing on Android PpSsPp, One Vision v0.992a. I used this cheat code to level units to Lv 30(1E hex).

_C0 All Professions Level 30
_L 0x402E7E90 0x00500002
_L 0x0000001E 0x00000000
_L 0x402E7E94 0x00500002
_L 0x00000000 0x00000000

The problem now is that no units can receive ExpPoints when the game divides it among units, and therefore they cannot level up. Their Exp in the Classes screen remains on 0 always. Ive tried turning off the Cheat, disabling Cheats in the emul options, deleting the content of the ULUS10565.ini and even the file itself, played randomly with the code(some random level results in party):  Nothing worked.

¿Is there a way or code to restore the Exp so units can level up? I still would like to level them down to 1 and play normally(level up). Thanks anyone in advance. 

Yeah, you're setting the exp to zero, that's why they can't level up, this is the right code:

_C0 All Professions Level 30
_L 0x402E7E90 0x00500002
_L 0x0000001E 0x00000000
_L 0x402E7E94 0x00500002
_L 0x000043F8 0x00000000

Once you run the code, the level and exp is set to that amount, you can turn the code off and it makes no difference, it already did its job. If you saved after running it, you can't revert back except by running the code again for some other amount. You actually should turn this one off after running it because it will otherwise keep your level and exp at set amount.

Sorry, I expected you will show up at discord and haven't been checking the forum.

THANK YOU! IT WORKED! Eventually. I think I turned on the code, saved game, returned to main screen, turned off, load game, or something. I'll keep experimenting with it. Thank you very much

A few random effects. I leveled down to 20 and turned off the code; after confirming that at level 30(where they got stucked) they were receiving Exp. After a story battle the active units leveled up from 20 to 30. In next battle they were still receiving Exp. In next few battles the active units went from 20 to 30, the previous got more exp accumulated. Then few battles later no more 20 to 30 even having everyone in party on 30 except one unit in 20, they all received Exp. Still haven't made anyone level up to 31, busy. I'll keep reporting.

Oh, active codes was only the one that shoots up skill rank.

When you set the level to 20, you should also set the XP to the correct value for level 20.