Pac man frog needs help!!!!

[IrishRonin]

Ok so I hate getting frogs this way cause I can't pick them out myself but my work needed a Pacman so... I ordered one from my food dealer (crickets,roaches,substrate,ect.) I have received good amphibians and reptiles from them before so I figured it would be ok. Well A beautiful little pac, unsure or what type or sex, came in but he/she had a small injury right behind its right eye. I was hoping someone could tell me what it is, how to treat it or if I should send the little one back and get a new one. So I hate the second option but there are 2 reasons to consider this 1- If I don't send him/her back by mon. my warranty runs out and if he/she dies its on my head 2- I'm worried that he/she might not get proper care on my days off (even though the lady who works on my days off is really good with animals) and I don't want to keep transferring him/her back and forth from my house cause I don't want to stress em out. By the way he/she is eating well (8 small/med. crickets last night, 1st night with me, no problem) doesn't seem to be off balance, no problems with his/her legs, not messing with injury and is very active. So I was wondering type,sex, Id on injury & opinions on what should I do?