Can share with us where did you found this exchange site?
If this comes from a Telegram that is offering to withdraw the fund but you can't able to withdraw if you don't deposit some money as said above.
This is a very common trap from the Telegram, I experienced this a long time ago and I almost fall into the trap but luckily I do always check the site before using it. You can do it too, use this website checker to know the details and the creation of the website if it's newly made like a week ago, that's most likely a scam website.
Yeah, it was over discord though, but I thought it was some scam or fake at least...
Yeah as in your situation was similar to @sheenshane? then that is indeed a scam.
A random stranger suddenly gives you free stuff? you won a giveaway but you never entered one? that's too good to be true. It has actually been debunked by users who had received similar DMs as a scam scheme to steal money and/or get information from their victims like:
KFC, bitcoin, discord scam and
MEE6 Discord bot SCAM ALERT Phishing exchanges !!Another thing to take into account would be the dodgy no-one-has-heard-of website. Also doesn't help that they usually have sketchy looking domain names...
From my what I've been seeing, scam DMs are just as rampant in discord. Always triple check the links you'll click, be careful of what you share online and consider tweaking your privacy settings, see:
Blocking & Privacy Settings