Link Guests to webSite Users

So I am having a little problem, I think.
I do allow shoppers to buy stuff from my online store as guests, after purchase they receive email about their order.
If customer made a purchase as guest is there a way to include a link for them to check the order status in receipt email? Is there any plugin that will do that? maybe some kind order lookup page or something like direct link to order details view.

Now the main thing.
Whenever this “guest” customer comes back and registers on website, with same email address as they purchased their item, The customer cannot find their recent order. It seems like order’s emails are not linking together @new user registration time.
So is it possible for previously as “guest” customer to see their recent orders on their account right after registration.

ps: I know that I can assign existing users to the order manually through the woocommerce order dashboard, but I am looking for some automated way of doing that.
psps: for registration I am using userPro plugin.

Thanks

https://www.ads-software.com/plugins/woocommerce/