Omnipod problems?

I first used a Medtronic but was offered an omnipod, which worked fine for 5 years, but lately my blood sugar tests have been increasing, without any reason (except lack of exercise).

I'm thinking it could be where I put it, mostly arms. It is sore on tummy areas and legs, are there any other places I can put it? I've seen on YouTube someone used their calf?

I have limited use of both arms so putting on back or bottom is not an option.