Cipher

Is this level so easy that nearly no one post here?......
Besides the title and the faked phone number, is there anything else make sense that I missed?

I've found [spoiler], the one on the [spoiler] could not be seen clearly... Whats the last char of this word? Is that [spoiler] ? Why don't you try with all of them until you got the right one? :) Because neither works... I wonder if there's sth wrong with the other three, but they seem obvious... ...

I've found [spoiler], the one on the [spoiler] could not be seen clearly...
Whats the last char of this word?
Is that [spoiler] ?

I think I've correctly filled the boards, but I've got trouble finding the "similarity"...
Do I need to reverse the second board upsidedown after filling it with letters?