Summer Sideshow + Weekly Event

For some reason i can not see the new 'skin' of the zeds on the new map, also i have completed both weekly events so far ( Under Pressure and Head Shot ) on Multiplayer also in Single player and i did not get any reward.

I've been told that the deal with me not being able to see the new zeds is 'cause of my internet, which is slow but not THAT slow, regular Brazilian internet i suppose.

I wasn't able to find any solution around internet.

Summer Sideshow + Weekly Event