Is it possible to appeal previously blocked accounts?

Hello community!

I’m an email marketer and recently a brand reached out saying that they’d like to start working on Klaviyo, but their account got blocked/denied because of their business model.

I wanted to ask: is there a way to appeal and change this decision or do they tend to be final? And if there is, would i need to get access to the brand Klaviyo account first to open a ticket?

The brand is very similar to https://www.forhims.com/ in terms of business model, they sell prescription treatments and have a team of professionals to prescribe them.

Thank you