timestamp doesn’t show link

The link to proof that is timestamped is not showing on some pages (which are all made in the same way).

It shows on these pages:
https://norskhjemme.com/privacy-policy/
https://norskhjemme.com/es/politica-de-privacidad/
https://norskhjemme.com/es/terminos-y-condiciones/

And not on these pages:
https://norskhjemme.com/pl/polityka-prywatnosci/
https://norskhjemme.com/pl/zasady-i-warunki/
https://norskhjemme.com/terms-conditions/

I have 7 pages timestamped (1 duplicated) and the proof shows in Wordproof.com