The weekly tasks in the Lost Grove for both the 'Temple of Light' and 'Trading Post' is not working. I cannot complete tasks although I have started them and the progress bar stays at 0 and does not change although more items have been gained. I started the Temple of Light weekly task last Saturday and it did not reset either. The daily tasks are completely fine and I have been doing them for days.

You have to actually spend those items.

For the Temple, you have to use the healer option, and select the talismen option from there (mend party pets)

For the Trader, you have to choose to show the price in terms of items, and then buy those items from the trader using those items. (there is an option right under the title where you can show prices in gold or items)