HI Paragmh,
Looks like VM are pulling a fast one here: in November 2020 I was promised free Boosters for my Hub 4, because its wifi performance is worse than the Hub 3 it replaced. But they never arrived, and today I learned (after a lengthy call to CS) that the free booster deal is not available unless you're on the 1Gb deal (a tiny proportion of all long-suffering customers). Now they are selling you mesh Pods at £5 a month, as if they are something wonderful, but really they are just making up for the poor performance of the Hub 4. Not happy at the degradation of wifi performance designed in. At £60 per year, you will be better off buying your own wifi extenders at £50 to £90 one-off payment.