all access rights are linked to and used like native user roles and capabilities (i.e the way wordpress handles user roles….)
there’s no extra entry in the db option table you could edit/change/delete
— none of the below ideas have been tested and might screw up things entirely !!!!—–
a) get yourself one of the user role management plugins and see if you can sort out the roles/capabilities that way if you cannot get access to any of them anymore from anywhere as admin.
the capabilities you are looking for are these
$wppizzaRoleCap[]='wppizza_cap_settings';
$wppizzaRoleCap[]='wppizza_cap_order_settings';
$wppizzaRoleCap[]='wppizza_cap_gateways';
$wppizzaRoleCap[]='wppizza_cap_order_form_settings';
$wppizzaRoleCap[]='wppizza_cap_opening_times';
$wppizzaRoleCap[]='wppizza_cap_meal_sizes';
$wppizzaRoleCap[]='wppizza_cap_additives';
$wppizzaRoleCap[]='wppizza_cap_layout';
$wppizzaRoleCap[]='wppizza_cap_localization';
$wppizzaRoleCap[]='wppizza_cap_order_history';
$wppizzaRoleCap[]='wppizza_cap_access';
$wppizzaRoleCap[]='wppizza_cap_tools';
$wppizzaRoleCap[]='wppizza_cap_delete_order';
b) delete ‘wppizza’ option from the option table of the db that relates to that particular site in your multisite setup. leave all other options alone. when you then go to the admin section of that sub-site, it will re-install the plugin , so you will have to re-set your settings again and delete all the default added items and pages , but it should not delete any items/categories etc you have already entered, it will just add to them
also, the user that is doing it – i.e admin hopefully – will get all the above capabilities as default….
WARNIING WARNING WARNING :: BACKUP YOUR STUFF FIRST THESE ARE JUST SOME IDEAS THAT MIGHT WORK. THEY HAVE NOT BEEN TESTED
did I say : WARNING ?!