how i upload my replays?

Go to the little thing right next to 'Post quick reply'
Wich is named 'Go Advanced
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Then go to 'Manage attatchments' a little further down
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Then click on that, Then a side popup will pop up.
Click on the first bar things, wichever you choose
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Then find your replay by seting it on your desktop and click upload
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-Cheers