I'm currently on spouse visa valid till 11-12-2020.
Entry Clearance visa issue date: 10-09-15
I entered UK first time on the 09-10-2015.
I will be applying for ILR this year, but have a question regarding when is the earliest I can apply?
Is it minus 28 days from the spouse visa expiry date or minus 28 days from when i entered the UK
first time or is it minus 28 days from the first entry clearance visa issue date

Secondly, last time I was given the residence permit spouse/partner leave to remain card not a visa stamp on my passport after my bio-metrics in Croydon. For ILR just wondering do we have to do the biometrics once again or is it all online? Asking this because of Covid situation!

Thanks everyone for all your input in advance.