Hi. I am the moderator of the game Tiny Toon Adventures: Buster's Hidden Treasure. The runner added his own race, but in the video, he doesn't use the program to record the time. Should I count this race?

Idk you're the moderator, is the run acceptable? A timer shouldn't be required unless there's a very good reason to have one showing (like if using an autosplitter to remove loads). As long as the run time is accurate and correct and the run abides by all rules, that should be all that matters. You can always retime the run if you'd like to verify it further.

Are you talking about livesplit?

There is absolutely nothing in the game rules saying that a timer needs to be displayed and I don't see any kind of IGT. Just because others have used livesplit doesn't mean you should necessarily be excluding people who don't want to use it. To be honest, I would think as a community you would err on inclusion of runners rather than arbitrarily excluding them.

However if you want to make livesplit a requirement for some reason (I think this would be a bad idea btw) - you absolutely need to include that in the rules.

Time the run yourself. https://www.speedrun.com/moderationrules#ch4_Rules - please don't require an onscreen timer just so you don't have to time a run yourself. If you have an autosplitter, that may be a reason to require a timer and not have to retime a run, but it doesn't sound like that is the case here.