Although ⲁⲛⲟⲕ and ϯ both mean "I", each has a different use and one can't be used instead of the other.
For example:
ⲁⲛⲟⲕ ⲡⲉ ⲁⲇⲁⲙ (I am adam) is correct, whileϯ ⲡⲉ ⲁⲇⲁⲙ is wrong.
ⲁⲛⲟⲕ is used when I am talking about my identity and usually followed by a noun (I am adam, I am son of George, I am a poor person, I am the king, I am your god, ....).
If the sentence has a verb or adjective, you can't use ⲁⲛⲟⲕ. Use ϯ instead (I am hungry, I am sad, I am cleaning the room, I can do this, ......)
In the sentence below (I can see everything), clearly has the verb "see" and it's in present tense so we can not use ⲁⲛⲟⲕ
ϯϣⲛⲁⲩ `ⲉ`ⲛⲭⲁⲓ ⲛⲓⲃⲉⲛ is the correct translation in this case.I don't have enough knowledge about Shaidic so can't comment on that