OK, now it has been corrected. It now says "Fully vaccinated only OR combined with a booster shot" more than 14 days old.

So, booster shots are technically irrelevant, so not sure why they are even still mentioned. But if you are 'fully vaccinated' you don't need to test at all. The definition of fully vaccinated is

"You are considered fully vaccinated with an accepted vaccine :
2 weeks after the second dose in a 2-dose series, such as the Pfizer, Moderna, Astrazeneca, Sinopharm, Sinovac/Coronavac and Covishield vaccines, or
2 weeks after a single-dose vaccine, such as Johnson & Johnson/Janssen vaccine, or
2 weeks after the second dose in a 2-dose series combination of a single dose Pfizer or Moderna with a single dose Astra Zeneca, or
2 weeks after a single-dose of vaccine after a confirmed COVID-19 infection within 6 months before the vaccination (to be stated on proof of vaccination in absence of a digital COVID-19 infection certificate).
the accepted Covid-19 vaccines are: Comirnaty (Pfizer), Spikevax (Moderna), Vaxzevria (Astrazeneca), Johnson & Johnson/Janssen, Covishield (Astrazeneca), Sinopharm and Sinovac/CoronaVac."