Of course, just because there is an actual alphabet doesn’t mean there still isn’t gibberish. For example, the spell that Zarya uses to become a revenge beast does include some latin-sounding phrases that hint of what’s to come (”angrus terriblus demona,” “phamtus evilus”) but also has words that I’m pretty sure don’t mean anything, with symbols I haven’t deciphered yet (and may not even be actual letters) and two lines are upside down. On top of that, the written spell is nothing like what Zarya actually says.
Another example: Arkayna’s pen is just writing Dear Diary over and over, occasionally backwards.
There is writing around the edge of the Dragon Disk, and it’s just the phrase they say in episode one, “Born of magic and of light, dragon mage, ranger, striker, and knight.” Except there isn’t enough room for the whole thing, so it stops after “kn.”
We’ve got numbers! Thanks to a close up of the phone, which gives us the digits:
So, we have the whole alphabet and numbers!