Thank you for your question about the club card. Like I have suggested on your other post, this would be a customer service question, therefore I would recommend you contact them by emailing email@example.com or calling 0800 977 7766, and they’ll be happy to help you with your query.
Lidl do not have a club card. There was a trial in 2015 in Scotland for a period of perhaps 8 weeks. I assume it was to investigate shopping habits, but nothing has come of it in terms of producing a loyalty card for Lidl UK.
Rather than make this statement, it seems that Lidl admin are moving to a purely admin position and removing themselves from any helpful responsibility.