thanks for all the info. one more question though please.
what day of the week do you have “Week Starts On” set to in your general wordpress setting (wp-admin/options-general.php) ?

can i see a screenshot of
– the setting in the plugin (wppizza->preorder)
– your main opening times (wppizza->openingtimes)
alongside the version of the preorder plugin you hare using ?

thanks

see https://docs.wp-pizza.com/developers/?section=preorder

something along these lines i guess (though unless you are only accepting COD type order , removing transaction id’s may not be a good idea , but up to you of course)

add_filter('wppizza_filter_transaction_details', 'my_custom_transaction_details', 10, 3);
function my_custom_transaction_details($tx_keys, $type, $order){
/*
get selected (filterable) parameters
available keys:
[wp_user_id] [order_update] [order_delivered] [notes] [payment_gateway] [payment_status] [user_data]
[ip_address] [order_date] [order_id] [payment_due] [pickup_delivery] [payment_type] [payment_method]
[transaction_id] [total]
*/
/* example : adding order id */
$tx_keys[] = 'order_id';
/* 
example: removing transaction_id 
(wppizza version <= 3.13.1)
*/
$_keys = array_flip($tx_keys);//flip key/value
$_txid_key = $_keys['transaction_id'];//get key for tx_id
unset($tx_keys[$_txid_key]);//remove tx id from array
/* 
example : removing transaction_id 
as of wppizza 3.13.2+ you will be able to 
simply do the following instead 
*/	
unset($tx_keys['transaction_id']);
return $tx_keys;
}

Glad to hear you got it solved

no. i mean get rid of it, delete it, omit it, eliminate it ….. ( clearer now ? 🙂 )
filters just don’t work that way

as that’s – evidently – an issue thrown in
>/wppizza-customisation/wppizza-customisation .php on line 16

only you will know what’s on line 16 there . There is no (official) plugin called ‘wppizza-customisation’ so i assume it’s something you created and added things to

Sorry, but I really cannot advise you on other plugins
However, regarding registration spam, that typically has nothing to do any kind of login widget anyway (spammers typically don’t click on links but attack things programmatically)

What i *can* say is that i killed a lot of registration spam by adding this recently: https://wordpress.org/plugins/ban-hammer/

it’s a bit quirky in places (and somewhat brute force) but in my case it stopped a lot of obviously fake registrations – it’s a start i guess and there are of course 1000’s of other security plugins anyway that [claim] to deal with this stuff too but that’s all down to personal preference and particular setup of course as to what is the right way for you

>…I ask the question…
fair enough though – no harm done in asking i would say . not everyone knows or is supposed to know how this stuff works of course. They are producing food, not software, after all.

see here
https://docs.wp-pizza.com/developers/?section=gateway-filter-frontend
probably / possibly in conjunction with wppizza_is_pickup()
from here
https://docs.wp-pizza.com/developers/?section=global-wppizza-functions