I am so sorry for your loss. Yes please include the link or at least the specific water bottle for others to learn to avoid.
As for getting another glider, you could probably wait a bit and monitor your glider and see if he/she is showing signs of being lonely. In the meantime try to give as much attention as possible. If you notice your lone glider missing a cage mate, try looking into rescues or rehomes.
I will recommend using a water silo instead of water bottle. I prefer
these in size small
They never fail, they are safe and are super easy to monitor, remove, clean, fill & replace. There are cheaper silos that may work just as well, I haven't used any others as of yet. If you have a cage that has horizontal bars rather than vertical, then you will have to try one of the cheaper ones.