Hey mado I'm so sorry to hear you had this experience.
Unfortunately, I am not sure why eBay suspended your account. Like you mentioned, you had an account for three years before and provided all the requested ID's for the second. I do know merchants who currently dropship on eBay and do not have these problems.
My only suggestion would be to reach out to their support team. Hopefully they can provide more information on why this happened. Once you know the reason why, they might be able to offer some insight in how to resolve it.
Keep us posted!