I'm not sure if Thai Immigration will accept monthly transfers for Danish citizens. It's true that the Danish Embassy stopped the confirmation of income letters at the same time as the US, British and Australian embassies. However, a few months later the Danish embassy started up again for certain types of income (pensions). It's more complicated (and more expensive) now than before, as the embassy require the entity paying out the pension to send documentation confirming the pension details directly to the embassy.