swiftkey how to delete words

[upup]

I love Swiftkey.
In the past I simply long press a wrong / unwanted word and delete it. Now I longpress but nothing happens. Any ideas please. Tipex also does not work,

 

[Chevron]

The long press works for me.

Also it's what is said here:
https://support.swiftkey.com/hc/en-...on-t-want-with-SwiftKey-Keyboard-for-Android-

 

[upup]

swiftkey 6.3.3.66

android 5.01 , samsung s4

On the previous phone it did work