There is nothing wrong with your channel, we are simply going through the list of pending and are working it down.
Just to have an idea how accreditation works from our side:
We get about 200-1500 accounts pending per day, in all ranges of subs. When we start with checking for accreditation, the list is being set up to check first mixer and then twitch (as those are super fast to check, as they are first of all not used as much as youtube and are not giving the users so much space for mistakes). They are all listed from highest subs to lowest and we check them through. After checking those down to 50 subs, youtube pops up, also highest to lowest.
Youtube is a difficult website to check as there is a lot of room for errors: incorrect tagging, multiple tagging, games tagging itself, videos of only 10s of length, videos tagged that are not gaming videos, uploading videos that are not their own and so on.
For youtube we have to open EVERY SINGLE VIDEO uploaded within the last 30 days that is on your content stream and scan through them. Which takes a lot of time. When it takes us 10-30s to check a twitch or mixer streamer, it can take us easily 5 mins or more to check a youtuber. Next thing is: We do not decline accreditations, aka if you didn't receive accreditation now, we check you again. and again. and again. and again. If you do the same mistake more than 5x, we put you on hold, to check you not every week or multiple times per week anymore, but in 1 month time. So working down the youtube list is taking unfortunately a lot of time just to give an idea: We have about 50-200 profiles we have to check to just go down 1(!) sub. So we have 50 account with for example 555 subs. And once we are finished for the day with accreditations, and log back in the next day we have another couple of hundred accounts back in pending.
We are never on purpose ignoring anyone, if your account is being checked, you will notice it (by either getting accreditation, your status changing to on hold or if we flag videos). But it is a time-consuming work to check users, that cannot be automated to work faster.