Giveaway Limit

You gain more slots for each given game and lose them from deleting and not received. This is there for reason of people not spamming fake giveaways...

you can always create a support ticket and ask a mod to manually increase you giveaway limit =)

It helps prevent a lot of disappointed people from fake GA's it may not be perfect but it seems to work well.

Be patient. Make more giveaways, you get more slots; you know that. Just give it more time. You have twelve slots already, that's three times more than the vast majority of Steam Gifts users.