Heya! 1Password employee here. We have never locked anyone out of their 1Password Account for missing a payment, and we never will.
Whenever your subscription lapses your 1Password account will instead go into a "frozen" state. While your account is frozen, you can still view, use, and even export all your items, copy your passwords, and even copy items to vaults outside your account.
The only things you won't be able to do while an account is frozen is add new items to vaults, edit existing items, invite people to your family or team, or autofill items in your browser.
Whenever your subscription lapses your 1Password account will instead go into a "frozen" state. While your account is frozen, you can still view, use, and even export all your items, copy your passwords, and even copy items to vaults outside your account.
The only things you won't be able to do while an account is frozen is add new items to vaults, edit existing items, invite people to your family or team, or autofill items in your browser.