This doesn’t need to be a big deal… We’re all required by law to be able to produce our documents when stopped, so in the event that your insurance doesn’t show on AskMID you need to carry you Insurance Certificate until it does.
Your bike can be seized if the Police have a reasonable suspicion that it is not insured or that you do not have a drivers license.
If you have to fall back on the certificate be prepared for this to be looked upon with suspicion if it’s more that a month old and you’re still not on MID. Far too many people try to pass off the certificate even when they’ve not kept up the payments… and if your insurer is closed then the police officer could understandably be suspicious enough to seize the bike.