Iphone 12, premium member, cannot change isobars to hPa. Isobars stuck in other measurement I do not understand! Signed out/in, no change. Works OK on iMac.

I have upgraded to Premium last year, now I cannot log in as a premium user. (On iMac) on iPhone, isobars are set in something there than Hpa, and will not change. Very dissapointing.

Subscribed to premium via Apple on 5th March '23, now find I have no access to my premium subscription on either my iMac or iPhone. I cannot restore purchases via handspring as I did not pay by them.
How do I restore my premium subscription?
Regards
Howard

Ah, thank you.