-Is this the order number or the invoice number? – it is the invoice number
-are these zeros appearing everywhere in WooCommerce or just the invoice? – just in the invoice number
-are you using any filters for order numbers that have a link with the invoice numbers? – no
-which version did you use before updating – 1.6.5
-Which version of WooCommerce & WP do you use? WP – 4.9.5 and WC – 3.3.5
-what number are you looking at in the database? The table in the database ‘wcpdf_invoice_number’ has 16 and 1677 for id and order_id fields
-have you set a padding for the invoice number in the settings? Is it an number or multiple 0’s? (Should be an actual number like 3) – Do you mean in WooCommerce > PDF Invoices and under Documents > invoices? That number is set right now to 2018000….what should that be?
