I've been trying to solve this for quite a while, it's been about 1 week.
My friend sent this to me to solve it.
Please do help
Xabj, lbhe yvzvgf, fgbc obgurevat zr, gunax lbh!!
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It's actually a very simple shift (caesar) cipher. Just shift all letters by 13 and you get your solution. So when A = 1 and Z = 26 Add 13 to the letter and you get your solution:
Know, your limits, stop bothering me, thank you
Because it is 13 so exactly half of 26 decrypting and encrypting is exactly the same operation
You can try it out here: http://www.xarg.org/tools/caesar-cipher/