Housing help for SN adult DC

[geordio]

DS and partner, both disabled (ASD, MLD + blind) and in their 30s, have become homeless after their private landlord evicted them to sell the house.
Both on benefits, no deposit or guarantor, so in the current housing crisis no private landlord will consider them as tenants.
Local council won't help as they didn't live in the area for 2 years.
We can't see them on the streets. Friends and her family are unable or unwilling to get involved.
So they are now staying with me and DH, we cannot afford to support them long term, and we don't get on. They have had their UC cut and lost PIP payments. After 2 weeks home life is a nightmare and we can't see any way ahead.
You may think there are plenty of 'support agencies' and charities to help, but all say they are not eligible, don't qualify or that they are at capacity at the moment.
The stress is making us ill. Can anyone suggest where we might turn?

Why have they lost PIP and had their UC cut (beyond no longer receiving the housing element)?
Have they got social care support?
If the LA won’t help as they haven’t lived there for 2 years have they approached the LA they lived in previously?

Thanks for replying. Obviously they have lost the housing element of their UC, and the PIP was withdrawn weeks ago - they are one of many in the long wait for a tribunal. Now they aren't able to save for a bond on a new private tenancy even if they could find one.
Their social worker has taken them off his books as they no longer live on his patch. And they only lived in the previous LA for one year. They have a very chaotic lifestyle and their disabilities mean that they find it very hard to negotiate the system.
We just don't know how to help - every road seems to lead to a dead end.

Sounds like both DS and DP need an appointee. Are you appointee for DS? Only the housing element of UC should have stopped. They should still be receiving the standard element (and LCWRA if eligible), so they shouldn’t have less disposable UC now because they are no longer paying rent.

They/you should request social care assessments from your LA. And a carer’s assessment for you.

There will be an LA with housing responsibility so they/you need to work out which one. It is worth speaking to Shelter.