Well that puts us in a sticky situation. Everything is electronic and would mean, the last year of items are invalid because its online.
At least you're aware now though, so you can start saving as much mail as possible from now on.
Do you have ANY other mail you have received in the post since July 2019 that you can use?
The following are examples of acceptable documents:
• Letters or other documents from government departments or agencies, for example HM Revenue and Customs, Department for Work and Pensions, DVLA, TV Licensing.
• Letters or other documents from your GP, a hospital or other local health service about medical treatments, appointments, home visits or other medical matters
• Bank statements/letters
• Building society savings books/letters
• Council tax bills or statements
• Electricity and/or gas bills or statements
• Water rates bills or statements
• Mortgage statements/agreement
• Tenancy agreement(s)
• Telephone bills or statements
If you are unable to provide all the required documents with 4-monthly spacings, you just need to write a letter explaining why you can't.
We always recommend that you turn OFF paperless billing for everything as soon as you arrive in the UK, and that you save all the mail you receive in the post, so that you have plenty to choose from when it comes to applying for FLR(M) and ILR.