I can't watch content, at high-resolution (HD, 2K, 3K, 4K/+)

BitMar does not host any content. All available content, that is accessible through BitMar, is provided by third-parties. That means, that: ultimately, whomever is providing the content makes the final decision; on how they provide their content. In other words: Not all content is available at all resolutions.

Additionally, most third-party players will automatically-adjust the resolution of the content; depending on the speed of your Internet connection. With that in mind... it is possible that you may be able to watch the same content, at different times of the day, at different resolutions.