Google Chrome Problem with Commsec Charts

HELP!

My problem started with trying to block bl***y Facebook popups even when I didn't have Facebook open! I found some instructions to change something in Chrome to stop them (didn't work LOL!), but somehow I accidentally changed one of the settings/permissions, or something, in Chrome such that it is not allowing me to change anything in Commsec charts (I can't get it off 3 month timeframe or change any indicator). I've searched all over the place to find the solution but can't on the internet.

Does anyone have any idea what I can do to fix this. I've tried a limited reset of Chrome (I don't want to lose all my bookmarks by doing a full one) but this didn't help.

Thanks, GW