Anyone who applied before they stopped Test and Go can still come under the same conditions, no matter when they arrive. Only change is they have to take a 2nd PCR test after a few days at the government's expense.
I read somewhere that Guy Pearce stepped in at the last minute when the original actor dropped out as he's a friend of Winslet. So he's maybe not playing such a key role. Naturally he will now turn out to be a wrong 'un.
Go to device settings - then Apps - Select Pie and Bovril - Select Storage - Select Clear Data
You will have to sign in again, and my case had to reapply your app settings such as Show Photo Preview.
Was having similar issues on tablet (but not on phone for some reason). Think I have solved it by going into settings and clearing data for the app. Closed and reopened a few times now with no issues.