In other words, if you can play a C major scale, then you can also play the scales of D, E, F#, G#, A# major using the same fingering, but you can't necessarily play F, G, A, B, C# major. Whether you can depends on whether your C scale fingering confines itself to two rows.
Why not F. G, A, B, C# major scales?
I've explained this. The Janko recommended scale fingering for right hand C major is to play CDE with the 2nd, 3rd, and 4th fingers, then to go down
a row to play F with the 1st finger (the thumb), then you go up two rows
to play GA with 2nd and 3rd fingers, down two rows
to play B with thumb, and up one row
to play C with 2nd again. If you follow that recommended fingering, it means your scale requires the use of 3 rows. If you only have 3 rows, then this pattern can be transposed only sideways, not up or down.
The scale pattern is always the same, consisting of: 3 keys, then 4 keys up; next octave the same! Of course I'll be always starting at the bottom or middle row.
Well, if you can play your scale using only two rows, that would be OK, but I'm not convinced that there exists a physiologically suitable fingering for doing that. If you play 3 keys, then go up for the next 4 keys, and down again for the next 3, and so on, then what fingers are you using to play these 7 keys? If, for example, you start with CDE with 234 in the middle row, you can't then go up
and play F with 1 on the upper row because it involves too much physical contortion. If you play F with 1 it has to be on the bottom row. The question then is where you play the next notes.
Would you consider building a fourth row?
Sure, I could do that. Which 4th row are you referring to; a row above or under the 3 rows and what's the advantage?
I was thinking above, but I don't think it's all that important whether it goes above or below. You already have two rows with FGAB in them, but only one with CDE, so that's the one you need to duplicate. If you've already glued the first 3 rows in position as low as they will go (that is to say nearest the player) then it makes sense for the 4th row to go above, if there is enough room to fit them in. It would be unfortunate if you had to rip the existing 3 rows up.
You can't get completely away from theory!
That's why I like to apply my notation.
No, that is illogical. How can a notation which is designed to go directly from printed representation to which button you press, deliberately bypassing awareness of what note is involved, help your understanding of theory? Especially if you want to play by ear, you need to know what notes and chords you are playing, independently of which buttons you press to obtain them!
That way I really won't need years lessons with a piano teacher or keep on practicing 22 more scales, its chord patterns and arpeggios.
I don't know where you got that nonsensical idea from. For practical play-by-ear purposes most tunes are in a small subset of all possible keys, so you don't need to learn 24 scales (actually it's 36, but let's not quibble) and 12 major and 12 minor chords, etc, at all, you can get away with far fewer. Besides, even if you did want to learn them all, you don't need a teacher's intensive help with that. It doesn't take years, it takes weeks. Nevertheless, if you want to develop good technique, some
lessons are probably going to be very useful. The trouble is that because this unusual keyboard layout is so rarely used, the chances of finding a teacher familiar with it are very slim. Technique, particularly advanced technique, on a Janko-style keyboard is going to be quite different from on a normal keyboard. I would go so far as to guess that many pieces in the repertoire which are quite challenging on the normal keyboard are very much more difficult on Janko.
The conclusion is obvious: Without a teacher your progress will be restricted. If you limit yourself to Janko-style keyboard, you won't find a teacher. Therefore, if you want to make progress, you must abandon the Janko idea and embrace the conventional keyboard. For similar reasons, and others which I can go into if you wish, you need to learn and use conventional notation, this Klavarskribo is not as helpful to you as you may think. It will perhaps get you to a particular level quickly, but you will then be stuck at that level until you learn "proper" notation. So, far from saving you time, it wastes your time. I suggest that at your age wasting time is something you can ill afford to do.