I made a swordman (Level 15 right now), and I threw about 17 base INT (With 8 additional with equips) For some reason, whenever I try and AP reset, I take the point out of MP, and put it into STR, it accepts it, but my stats do not change, and then I am unable to go into portals, and I have to change channels. I have no idea why this is happening. Any advice would be very appreciated.
The minimum MP for warriors below lvl 30 is lower than what it says in most guides (they are based on lvl 30+ or sometimes 70+ statistics). you already hit your minimum MP and it wont let you lower it any more at the moment.
Continue leveling with int to gain MP until you no longer hit minimum MP and can wash again, essentially. That could be level 30, it could be lower than that, since most guides don't specify what the formula is for 1st job warriors.
No. AP resets can remove from more stats than just MP. And it's not technically letting you use it on your minimum MP, because your stats aren't changing.