Linking eVisa to UKVI account

Based on the invitation letter I created a UKVI account and submitted the form for linking eVisa on 29 July. My UKVI account now shows that the form has been submitted but has not been linked to the UKVI account as yet.
The UKVI account still shows the BRP with expiry date as 31 Dec
The link to show my immigration status correctly shows my visa which is valid til 2026
When will the form submitted to link evisa to UKVI accpunt be approved and when will I be able to see the evisa with expiry date as 2026 in my UKVI account? Who should I contact of not done by Dec 24?

Can someone please advise on this? In my UKVI account, it shows evisa form as submitted but not yet linked. Its almost 3 months since submitting evisa form and opening UKVI account
Am worried about travelling without evosa being linked to UKVI account after Dec

Try raising a complaint with UKVI complaints@homeoffice.gov.uk or check if there are any email addresses on the eVisa/UKVI account page.