Hiya Jill! So far there's been no expiration given for the tower quests so I don't think there will be one. I can't say for sure that it won't change in the future, but I think you're good to go to take things easy
You're not bugging me at all, lol! The bummer is that there's no good answer for this one. The only way I know of is to count them one by one now (or by 5's since there's 5 names per scroll I think). If you do it by scroll, just remember when you're done to remove 2 from your total (1 for you and 1 for LuLu) =)
It can be done if you're able to manage your crystals to have enough left over. The first thing is that once you complete a crystal chapter, you can't request more crystals. That means for the next chapter, you'll want to do everything but the very last step (or at least one part of the last step). Usually, the last step is upgrading a building to level 5 or getting 12 stars. If it's the 12 stars then you could play all of them out except for a small part of the last star. If it's the upgrade then you could upgrade to right before the last one. For both of those, figure out how many crystals you need to complete them and then continue requesting crystals like normal. Any crystals you get above that number can be applied to the old chapter with no danger to this one.
Unfortunately we don't know the exact number. In the past, several of us kept track and had figured it out, but it changes for each chapter and no one has tracked it recently. The best advice I can give is next time around keep track of how many crystals you earn and use that as your starting point. For the being careful part, the biggest crystal stealer is the collection item. I would put those pieces on your wishlist as soon as possible and remove them as you go. Getting a neighbor to help you instead of using crystals to find that last rare piece will save a lot of crystals in the long run. (We have a swap meet thread on the forums if you're running into bad luck too) =)
Hi Jill and welcome to the forums I'd need a bit more info, but there could be a couple reasons. The main one that we see show up around the time is that you've hit the max upper limit for earned crystals. We're only allowed to earn a set amount before we get turned off (grayed out). If you use crystals for items from the previous chapters or if you used a lot to earn collection pieces then it's possible to be grayed out even though you still have quests to complete in this current one.The other main reason would be a game glitch of some kind, but most of the time there's an actual reason. There's more talk about the crystals in the FAQ thread for them on the GoT forum that might help too. You can find it here: http://forum.playdom.com/showthread....-Time-Crystals