Double turn not working on purple gem match

Support
1

What you were expecting to happen, and what actually happened?
I’m currently doing GW and I’ve made (twice in two battles) a 4-match with purple gem. I expected to get another turn.

What are the steps to make it happen again?
Make another 4-match with purple gems, I suppose.

Do you have any screenshots or video you want to share with us so we can see the problem? Attach them to your post!
No, I’m sorry…

2

Do you remember your opponents’ teams?

3

I felt like something was weird this morning. I swear I had a 5-cascade turn that resulted in me collecting 4 mana.

4

One was all dwarves, the other the usual Justice League. I wasn’t Freezed, though.