Moved house and sanctioned?

I have recently moved house and kind of feared this but have got a letter stating my benefit has changed...i.e. reduced, I am on esa and pip and it say my esa has changed due to contribution related contributions running out, but im not sure that's really true as i had one of those letter in the assessment phase so i think its maybe a sanction.

Basically I was in a temporary flat and have moved to a council tenancy, so unfortunately had to change jobcentres, I kept the dwp up to date at every stage of the move and on the day of the move itself. I received two letters from my new and old job centres for wrag group interview on the same day, 27 feb. Obviously I wont now be going to the old job centre. However the new job centre app was for 9am, I have chronic issues with exhaustion and due to my meds im a mess in the mornings and couldn't make that, so i called them to change it, and they brought it forward two weeks to a better time, I'm wondering if they are treating my rearranged interview as a missed appointment even though no appointment has been missed.

However I still dont fullly understand. After starting ESA last year the dwp sent me a letter saying I may be entitled to extra if I had a carer, which I do, and to tick the carer box and return if the case, following that I was awarded an extra £60 per week. This was then listed on future letters as extreme disability allowance, my problems are mental and physical and i am very limited and reliant on help, however i found the description a little different from the carers payment it was described as.

So the reduction is that now I get an income related amount of £102 oer week, which I think is standard ESA wrag benefit, so my questions are

1. Do you think this is a sanction? Should I call them to ask
2. Or have the new job centre just taken away the extra allowance I was given for requiring having a carer - would that be affected by changing from contribution to income based, in which case should I ask them?, I am a hugely anxious person and Im terrified they now might say I wasnt entitled to previous payments or something. I dont really understand these things and cant really handle the stress of arguing about it for fear of making it worse.

I think you are right, they have just sent me that form, thanks and sorry i panic