Customers not able to checkout!

[InesLamyDesign]

I just realized today, that my customers cannot checkout.
They choose what they want and put on the cart, but at the checkout, the button to checkout, is not working, is grey and "non clickable".
Is this happening to many shops?
I tried to reach chat support, and got no answer back, so I hope technical support can do something about this.
Thank you.

[NanaLetha]

I added one of your items to my cart the checkout button is live and not grayed out.

[NanaLetha]

You can't see it because you can't buy from your own shop.

[TheVintagePineapple]

Are these buyers also located in France and are they trying to purchase an order that totals more than the $ limitation?

Another reason could be if the buyer is trying to buy everything in their cart which includes items from different shops.  If it's a mix of orders that can be paid with Etsy payments and paypal only, that could be the reason the button is grayed out.

[bradgoodell]

I went all the way through checkout and nothing was greyed out.  I stopped before the final "buy" but the button was clearly black and active.