Doesn't surprise me in the slightest to be honest.
Can't be that difficult to communicate to your members of staff that we accept Apple Pay over £30 (where supported).
I work in a small-ish store with around 30 members of staff, it's a very busy store that takes around £120k a week most of that being fuel purchases.
All the staff are paid to do shift based work and everybody does everything, there are no departments and no specific skill-sets excluding management. Our younger member of staff is 18 and our oldest around 42.
Because of the intensity of the store and the fact that at no point do we have all staff in, communication is actually very challenging! Changes such as a new set of payment terminals is not communicated and in fact I've signed an engineer in to install new scanners and he was in & out within about 5 minutes after quickly explaining to me that 'it can scan screens'. Unless I pin a sheet of paper to the canteen wall to point out the new scanners, all the staff will just 'figure them out'.
The problem is that stores often don't value these sorts of changes because they don't offer immediate, obvious income and benefits to the business whereas for example a new meal deal or another fuel island does.