Will not be staying with this company its a joke .
Best answer by mattj3135
Please search at the top of this page "top up" in the search bar. This will give loads of info on topping up.
To get a top up card to top up using paypoint reach out to boost and they will send one out asap. They can provide a code to use at the shop if you have smart meters.
To top up using a debit card and by text you'll need to register your number to your account for it to work.
I would advise telephoning boost as they can loan funds if needed to prevent being cut off. They can talk you through topping up also.
Whilst on the phone to boost I suggest you ask to join the priority services register as you've mentioned your husband being disabled.
Hope this helps
*Update - 11/07/2019 - Link added to PAYG+ content*
https://forum.boostpower.co.uk/smart-payg-23/smart-payg-upgrade-faq-1393 - Boost PAYG+ Upgrade FAQ.