Drupal 8.x

On this page of demo drupal commerce 2, there is a button "Add to cart" :

https://demo.commercekickstart.com/product/drupal-commerce-hoodie

How to replace the button "Add to cart" by a button "No sale online", without removing the variations ?

Here is my code, but it removes the variations. I only want to replace the button "Add to cart" :

Hello everyone.

I am running D8 and have enabled the user picture in admin > people view.

If i leave the image as "original" the image shows.

If i change it to anything else the image fails to load, but using "chrome developer" web (F12) i can see the URL and WxH.

But no image showing.

I have googled, and googled but cannot find a resolution to this.

Can someone please help?

Many thanks,

We have a view in our D7 site that shows a result something like this: 

2018 (123 articles)
2017 (200 articles)
2016 (172 articles)

I tried creating a relatively similar view in D8 but I'm not having any luck. 

How would I do the above for a Drupal 8 site - grouping articles by year and just showing the year with the number of articles in that year. As well as a link to view a specific year's articles.

Note, I do not want to simply create a blog content type, I have found several tutorials on that. I want to know how to create a page to publish all of the blogs onto, similar to a wordpress site. I have a basic informational website, but want a tab for "blog" that shows a feed of all of the blog posts, searchable by content type and by publish date. 

Can anyone help me with this? 

Thank you!

I have Drupal 8 and Commerce 2. I created the roles "Merchant" and "Premium Merchant". By default, users who create a store have the role "Merchant".

I have upgraded my site from D 8.5.3 to 8.5.8.

Looks everything is ok.

May I upgrade now directly to 8.6.2 ?

Do I need to upgrade to 8.6.2 ?

If not, should I upgrade to 8.6.2 ?

If yes, why?

Thank you