Hello, I'm new!

I've just been placed in the ESA support group and I would like to know if this is due to my physical or mental health.
Looking at the descriptors it isn't obvious which criteria I would fit into to.
Is it OK to ask for a statement of reasons even though I'm NOT asking for an MR or appeal? Would they have a statement of reasons for placing someone in the support group?
I have mental health issues, some relating to the pandemic, so it would be good to know if my award is likely be reveiwed after the pandemic etc as there is no end date or explaination in the award letter.
Thank you.