UC - I am my son’s appointee - guidance needed

sorry for the long post :

Good morning. I am my son’s appointee and the UC was going into my account that like a fool I also used for my own wages etc. however I was paying his bills and transferring the rest of the money in his account. I have uploaded the statements for the said account and also have his bank statements ready as well as the savings accounts mine and his to show not a lot . I have requested an extra link on his journal to add them on. I even printed statements for Revolut and PayPal ( all in my name ).
My question is, how long till they send the extra link? They don’t seem to be responding to anything I asked, should I chase up with phone call? I have also asked them for a little extension, I’ve lost my mother on 08/03 and my head is all over the place. I told them that but still no reply!
Yes, I’ve learned my lesson and contacted the bank for appointment on opening an appointee account in my son’s name only . I genuinely did not know that I could do that , in my mind I thought as everything was done electronically, there would be a clear footprint . Also his girlfriend who lives 4 hours away comes to visit every now and then and has put bits of money in his account while visiting for food ( 110 and 100£ respectively), they have helped each other out with small amounts of money . This is on his bank statements, will it cause issues? His father pays100£ per month, money that he transfers in my account that I then use towards his therapy CBT sessions that I pay via REVOLUT or towards psychiatrist reviews.
The date to submit everything is 24/03.
I hope they will see that everything is there .
I am stressed but I know I haven’t done anything wrong .
Please can you advise me? Thank you 🙏🏼