Why "this is important" is not correct?

Still not fixed! 'This is important' still not accepted!

I have typed "That is important!" Three times now, and it keeps saying I am wrong.

Why not "this" is important?

Reported that "This is important!" should be accepted. - 18 August 2018

Same problem

"This is important" ...still not accepted! (2 Okt 2018)

Please, answer (05 Nov 2018)

The pronunciations got me stumped

same here. still not accepted ... 25 october 18

Please, answer (13 Nov, 2018)

Heard it as" das ist richtig", sound quality is poor

28.3.18 it's fixed

Maybe "This is important" would be "Dies ist wichtig" ? Just wondering, I'm no expert.

Das means this or that. So why is it wrong?

12.1.2019. Still not fixed.

2.3.2019, not fixed yet.