Yes, they are correct the first extension you get is 30 days. Now the covid scheme has been extended you will be able to apply for that when you have less than 30 days remaining on your stamp and get a further 60 days.
The covid extension scheme now runs until
****
/22. In which case you could apply again, once you have less than 30 days left on your new stamp and before
****
and get another 60 days. Each covid extension is 1900 the
Note, the first covid extension gives 60 days from when you apply.
The second adds 60 days to your stamp. There will be an optimum time to apply for your first stamp and still be able to get a second. Hope that makes sense