Why was my DTV Soft Power visa application cancelled after submitting all required documents?

You simply applied for wrong visa hence it's cancelled, you should apply for elite visa

Just out of curiosity- do you know if applying from Toronto or Vancouver in Canada, reliable and legitimate?

To be frank, different embassies in different countries have different requirements so maybe try in some other country. However, another issue may be that income derived from investments may not be too useful to the embassy because even if it shows a monthly profit and you do withdraw it, it may not be considered a stable income.

Thai Consulates and Embassies in India are pretty strict. And since you mentioned unemployed in your application, your chances of rejection just skyrocketed. If your source of income is from investment, you should just have mentioned you're a stock trader and you get X amount of money every month from your investments as dividends to support your daily life. Never should you have mentioned "unemployed".

Secondly, you need to have 500K THB for at least 6 months. I was personally told this by Kolkata Consulate. I'm assuming it's true for all the consulates in India.

Thirdly, email the Embassy with your application number and ask for the reason for cancellation/rejection. Try to fix your mistake next time you apply.

Since you application has been recently rejected, apply after at least 2 months. And if possible apply from Thai Embassy in Laos, Jakarta, Cambodia or Vietnam. However I hear that a lot of DTV visa holders are being questioned by Immigration Officers at the airports if their DTV visa has been issued from Vietnam.

500k in your account no lees than 6 mounts

Where are you physically located? You state you plan to cover yourself using your savings, but the embassy will see that your bank didn’t have much savings more than the last few months. Crypto and gold won’t be sufficient evidence

But you had all the correct details for the Muay Thai school?

I think as a part of the visa you need to keep at least 500k in your bank at all times during your stay, I may be wrong

Another warning and reason to stop applying at Joe Blows Far East Embassy with limited approvals and extra documents and requirements. Go with the tried and tested embassies surrounding Thailand.

Did you check if you need 3 months seasaoning of 500k? Some embassies in India require that.

You should wait for your to have the funds in your accounts for 3 months. Sounds like that embassy is pretty strict. It has to be liquid, not investments. Can you travel to another country to apply? They should not be asking for income for soft power.

What soft power activity did you choose to make the DTV Visa Application for ???

What is your passport nation? Indian ?

Which Thai Embassy or Consulate did you apply for the DTV visa...

In India ??