Like some others have mentioned, you have to travel to another country to apply for the DTV visa. Popular destinations near Thailand are Vietnam, Philippines and Laos.
That being said, the country you should choose to apply from also depends on your nationality. Generally, applying from your home country is recommended (unless you're Singaporean, Malaysian or Japanese).
1) We've not experienced any issues with our applicants using more than 1 bank account. That being said, if you have time before your planned date of application, there is no harm in combining the bank accounts.
2) Definitely no issue using a different currency. In fact, adding extra documentation with the conversion may confuse the officers at the embassy and negatively affect your case.
Please note that for Pakistani passport you can only apply from Vietnam if you have residency there e.g. work visa, residency visa. It is not what some others have suggested. For Pakistani passport you can only apply in Cambodia, Indonesia or Pakistan.
We've assisted some other Pakistani nationals under Thai Soft Power before so we're a little bit familiar.
Thanks again for the shoutout! Just to share — many of Thailand’s top visa agencies (like Issa Compass, Siam Legal, and Baan Thai Immigration) use our DTV-eligible cooking program because it’s straightforward, trusted, and comes with a full money-back guarantee in case of rejection.
Happy to answer any questions or help guide others through the process.