Sobriy, the same thing happened to me (sort of)! On http I have 1 (but it doesn't show a plus sign, just all locks), but on https it gave me the option to click the first plus sign (even though I did this already yesterday), and when I clicked it this time, it showed two check marks! But then when I refresh it's all locks again. Isn't that weird?

^ It's the same to me.

http → only the first day
https → yesterday and today

If I refresh the page with http is still on the first one even if I've marked both with https. If I return to https I still have my two marks though.

Same thing here, glad it wasn't just me.

Yesterday, got first stamp on http address but today when the counter had expired for todays stamp to be available, it wasn't. Did the same as others here and went to https and claimed my second stamp. Only shows I have both stamps when I use https, http only shows I have the first even when I refresh the browser.

Perquisitore, are you implying the sale started Sunday?! That means I missed a day!

If anyone remembers, what were the bundle package deals that day, just so that in case they were anything good, I'll remember to kick myself in the face?

My partner have the same problem as you, I forget to tell him to click in the stamp and he started today.. is there any chance to get the game for him? Please respond whoever knows anything

Well i dont even got the witcher 2? It says stamp collected but i get nothing...

You need to collect all the stamps by returning each day to collect another one each time, until you have all 7.

Uh... if I remember well it was on Wednesday? It was on my birthday, so yeah, I guess it was this day. Maybe I'm wrong but I think the first day was on Wednesday.

Edit: So I have three stamps, if this means something.

If you have problems like that, just simply clear your browser's cache, probably will fix this (especially if you get different results using http and https).
Or ctrl+F5. It's called 'hard refresh', it should reload page ignoring what it has in the cache.
I always do both (clear cache and then do hard refresh) when I have display errors like that.

^ That should do if the problem is on your side.
For server-side I think link given by @groze should help (I'm not 100% sure, as this is only my second day here, so I've never used this link... yet).

My stamps had reset today. I only needed to collect one today and another tomorrow. Now I need like 4 stamps. Tried all possible solutions listed here and it doesn't get fixed.

Any suggestions?

I have COLLECT all 7 stamps, but I have not email with code? O_o

Mirithiel: They reset?! What do you mean - why would they do that?!

I don't know. I just had to collect yesterday's stamp and today's one, but right now it shows that I need to collect the last three stamps after getting one today (yesterday it showed I needed four more after getting one yesterday).

I got one stamp/day every day. Today I should have the 7th one to unlock, but instead of that I just unlocked the 4th one. So I lost three stamps that I had already unlocked.

I don't even see how that's possible! The database should store it properly. Now that I think of it though, I did see it show one less than it was supposed to once, but I refreshed and it was alright again.