ESA Managed Migration Support Group confusion

I submitted my claim yesterday. Can I please ask:

1: When and how do I ask for reasonable adjustments. I cannot go to the job centre as I have Complex Physical needs and severe anxiety. I need all communication in writing and have done for years. I cannot cope with phone calls, f2f visits. I do not answer calls unless I know who is calling and if it was from benefits I would need someone with me as I would not take the information in due to fear of past experiences.

2: Alternative payment arrangement - How and when to ask to be paid 2 weekly as I will struggle with monthly payments. Also for my rent to be paid direct to the housing association. Are there any downsides to being paid 2 weekly?

3: Today I received a P60 which I have not received one for years. Approx 2016 I was on CB ESA and then moved to IB ESA. Does this mean I will be on New Style ESA and UC and what does this actually mean and how will it affect me?

4: When completing the form I ticked I get PIP but in INcome other than earnings it says is not getting any other payments or benefits.
In the journal entries, the to do list is all listed however,
Other benefits affecting your UC,
You still need to accept your claimant commitments
New claim details were submitted
Are all underlined and do not state completed, though everything else does. I did complete them and and there is nothing in my to do list. Could this be because they are still checking these at their end?

It also says on 10th June I should know how much I will get and on the 14th June I should be paid.

Sorry this is so long.
I hope someone can help, Many thanks