VAT Number not appearing on invoice

Just got my vat number through and added it into quickfile but when i preview a invoice after the date i have selected it just shows a blank vat number

in fact i just generated a new one and it works but invoices which are in vat period do not show it even when i change them to have vat

If you just became VAT registered you shouldn’t be including this number on all your previous invoices raised before VAT registration. That’s why it doesn’t retrospectively update.

when registering i marked down to be vat registered from 18th but i only just got the vat number today i think i will need to contact them regarding this one as i don’t want to include the vat on them invoices if i aint meant to.

I would discuss this with HMRC or your accountant. You shouldn’t be retrospectively changing invoices already issued to clients.