What documents do I need to apply for a Digital Nomad visa in Thailand while working as a freelancer with an offshore company in Hong Kong?

[DTV Hanoi Hong Kong company?]

I am a digital nomad planning to visit Vietnam for 2–3 months in April. I intend to apply for a Digital Nomad (DTV) visa for thailand from there. As I work fully online, my primary purpose is a workation. However, I am a bit confused about the required documents.

I am both a business owner and a freelancer. I own a one-person offshore company in Hong Kong, where I serve as the director. All invoices are issued through the company, and I usually take profits as dividends once or twice a year. Because of this setup, I do not have an employment contract or an employment certificate (that would be taxed in HK - dividends are not)

I could potentially provide client reviews and prepare a portfolio showcasing my work (I have completed over 200 jobs on Upwork). I could also include links to client websites, but I typically do not have formal contracts, as most of my work is conducted through Upwork/informal relations since few years + contracts would be on company not me anyway.

Could you advise on the list of documents I would need in my specific situation? I plan to apply for the visa while in Vietnam (Hanoi, specifically, as that’s where the embassy is). I shoot the embassy too - but I wonder is somebody in a similar situation dealt with it already.

PS once I will get anwser from them I will post it here :)