Looking for help setting up TikTok ads

I have a swimwear company and as we approach Summer I want to run TikTok ads. I have tried it in the past and quite recently and not had much luck with it.

We sell crochet bikinis in many different colours in glitter and shimmer fabrics so I feel like they should do really well on TikTok. We are based in the UK but we ship worldwide and so I want to target people in key EU countries such as Italy, France, Germany as well as the US.

When I tried it before I received an error saying that the content was rejected in many countries so I don't think the ads ran in all countries. Obviously with it being swimwear perhaps this is why it's been rejected but I'm trying to overcome this so some help would be great.

I've been having issues trying to see which countries TikTok is spending the money in, it would be useful to see this. I would like to target UK, France, Italy, Germany and the US.

Our website is www.luxseaswimwear.com and TikTok is https://www.tiktok.com/@luxseaswimwear

I'm open to any ideas and suggestions! I have not done that much on TikTok as I only know how to use the platform on quite a basic level. I'm really keen to ramp this up now as we come into high season.

I'm not looking to pay someone to manage this for me on an ongoing basis, I'm just looking for help with the initial set up, and perhaps some help going forward here and there.