What should I do if I've misplaced my 90-day report for my visa in Thailand?

If you've misplaced your 90-day report, the first step is to determine how strict your local immigration office is. Experiences vary, with some offices allowing continued applications without the report, while others may require a police report stating that you've lost it. If you filed your last report online, you can simply print another copy. Having your passport and showing up on time is crucial. It's generally noted that your data is in their system, so the physical paper is secondary; however, having a police report can be advantageous in case of police checks.