It's still wrong what you say... the DTV is for people who want to work here... but... not in a Thai company or with Thai customers. Remote work for a foreign company is legal now with this visa, that's the big difference to before.
There's only one Embassy (Berlin) in Germany, plus two Consulates-General (Frankfurt and Munich). You are supposed to apply in Berlin (see picture); otherwise they may reject your application and the money may be lost...