I'm only up to chapter 8 at the moment, been stuck there for almost two months since subscribing to your work which I'll explain later on in the this review slash critique.
What I do like about your series are the following:
You're very committed to your work, and it truly shows in the amount of updates/pages you have put into your creation. Something I'm always noticing with long running series is when people get burned out it can leave people left with nothing and/or force them to bail on them, so kudos to that. I like your characters for the most part, mainly the straight man protagonist Maria. The idea of the story is intriguing enough to keep as a long running series, and ensures I remain subbed to it. The covers are some of my favorite updates to see whenever a new chapter begins as they're usually pretty bright and cute to look at. Humor when it hits can be quite charming, and the characters work well together.
Some issues that I've noticed:
Because you update almost every single day it seems like some pages get rushed and some pages get more priority over others which can be obvious at times (ex: pg 4-6 look more rushed than pg 5-7 of chapter 4). I'm not sure what time restraints you have, but it is visibly noticeable at times. I won't get too much into stories as I'm not caught up to the current update, where I'm at now it's mostly exposition and explanation of the game I'm still not sure I get. The reason for not being up to date is due to the constant updates, but that's only a personal thing I have when subscribing to some stuff. I know people say more is better, but sometimes it's necessary to have some breathing room between updates to reflect on what was just read. It's actually what I like about the first seven chapters, it's one update, I can read it, reflect on what happened in the chapter/update and move on to the next pages. However, that's a personal preference, and I'm sure a lot of people would disagree with me on that, so think nothing of that, but I think it would help with the whole taking your time with each page thing, but like I said I don't know your work method. I guess some minor translation errors, but it isn't really that big of a deal to be honest, I imagine most people wouldn't notice them.
I do look forward to reading more of Magic Power Ball whenever I get my own works managed myself. I don't think finding an audience should be a challenge for a charming and cute series like the one you've created, hell I've shared some of your chapters on my twitter a couple times hoping someone might check it out so it's worthwhile. Based on the updates I keep accidentally clicking on, I can tell the pages only keep getting better than where I am now.
6/10 Pretty good (there's room for improvement that you probably can and will make)
Hope this helps