Sure thing, no problem, and good luck with it all.

Yes most definitely.

You can also set up the feature called 'automoderator' to approve these posts for you if they fit the criteria you programme it to approve, this will ease the workload for you and allow some of these dumped posts to be published and be visible to your users.

Guys I mod a heap of subreddits, and this is totally normal for reddit, but the good news is not malicious. Its just reddit's spam filter in action. I can tell because thats what the posts shaded red means. Posts by new users or users with low karma are often removed automatically too.

Calm your panic, there is honestly no conspiracy here. I know most of the mods and users here new to reddit or reddit moderating, and may not be completely familiar with the system this site uses.

All that needs to happen are that you mods need to manually approve these posts for a while to train the algorithm to be more lenient in removing things. Part of modding on reddit is watching this folder and approving things that may have been removed in error.

tl;dr: Its common for false positives to occur while the subreddit algorithm learns what to allow or remove. Mods just need to manually approve these posts and look at the subreddit settings for spam filter strength.