Can a tenant claim compensation for mould after the flat has been sold?

Hi, I wrote a while ago about the tenant wanting compensation for mould. >> https://www.property118.com/tenant-wants-compensation-for-mould/ 

I have since sold the flat, but have been informed by the letting agent who were managing the flat that the tenant has been into the office with his mother. They said they are likely to take matters further if they feel there is no successful outcome. There was a bit of mould found at the bottom of the skirting board, which the handyman said was due to a lack of ventilation, but this was resolved quickly.

The tenant is asking for compensation for the handyman doing the work. The handyman responded within a couple of days and returned the following day to paint the room.

The tenant is also asking for compensation for using the dehumidifier, which I bought thinking it would help.  The tenant has also stated that some items were damaged, though I haven’t seen any photos.

The letting agent said they were going to deal with it, but I’ve now been told the mother plans to take things further.  Do you feel this could go further, and should this be paid without seeing evidence?

The letting agent doesn’t seem to offer much advice but I’ve sold the flat and the tenant is leaving soon.

Would you pay or negotiate?

Thanks,

Debra