What are the requirements for bank statements when applying for a visa extension based on marriage in Thailand using the 400k method?

When applying for a visa extension in Thailand based on marriage using the 400k method, it's important to note that while the official bank certificate can be up to 7 days old, the requirement for bank statements can differ. One user mentioned they could only obtain a statement up to a specific date from Bangkok Bank. However, other users advised that it's possible to print statements for any date range within the last six months via the bank's website. Additionally, when applying for the extension, the immigration office primarily checks if the required 400k baht has been in the account for at least the past two months by reviewing bank book entries, rather than requiring a detailed transactional statement.