Understanding Amazon Ads

Hello all, I just found this sub, hopefully I’m in regs and I can get some help. I’m doing FBA and I’m trying to start advertisement.

I see it says my campaign is delivering, but I also see that my ad is not approved?

Google says some products aren’t eligible for ads, and or there’s some issue on my part?

I thought it would be simple to sell. Anyone else run into this problem?