The website also mentions that the Destination Thailand Visa takes over a month to process. Since there isn't any other information available, I was curious about it too. I'll wait for your update. Thanks!
I have a similar situation. I applied from South Korea, and on the Tahi Embassy in korea website, there is a warning: 'The applicant must be in South Korea to apply for a visa and visa document from the Thai Embassy in South Korea. If you disclose that you are staying in another country during visa application or after visa issuance, the Embassy of Thailand may reject or cancel your application for staying outside the scope of the Embassy's authority.'
For now, I'm just waiting.Try contacting the embassy where you applied