I only get that it has to do something with https://www.speedrun.com/pt (Piano Tiles). But other than that ¯_(ツ)_/¯
If what you mean is that you don't know what to do if you have had a really good score on the game but have no way to prove it. You could take a picture of the record and post it.
Or you could do your best to beat it on camera abs then post that.
Other than that I don't know what to tell you.
If recording not support long time, write magazine with story picture. Many awards for you are waiting The eagle flies at midnight.
I'm not sure what you meant with your post, but I do know that passing off someone else's TAS runs as your own RTA runs is a sure way to get banned.
Several of the runs he submitted were with stolen/copied videos. I can't judge whether any or all of his other submitted runs are fake as well, given they have only screenshot proof it's pretty hard to establish (for me, certainly) but I would definitely suggest taking another good look at them.
You mean you want to know what to do when you have trouble with your recording device and can't record your playthrough for a long time with that, right ?(If I'm not mistaken)
Hm... I think you better try using that stuff after a pause for some while, or if you really can't make it work as you want you better buy another one. :) (would be easier for us to answer if only you could specify which device you're using at the moment)
And if you mean "my record do not support" by you "can't have your in-game record on the top of the leaderboards", hm I can say the only way you keep staying on the top is just beat the record of the other players...