I found a solution for the Ghibli Tickets. It is possible to open a Lawson Ticket account without SMS verification now, seems that they switched that step off. It is possible to use a random japanese mobile phone number now without verification. Use a postal address of any hotel. When the website show "You are not able to access over your environment." after login to the account, connect to a japanese VPN. Then you have to solve a captcha and enter your creditcard details in the next step. They wrote that only creditcards issued in japan will work, but my physical Revolut creditcard also worked. I got a confirmation number and can pickup the tickets at Lawsons till the date I booked the tickets for.
Anyone know if they will check the mobile phone number while collecting the tickets? Or which details they will ask for, name, reservation number, phone number? I can just hope that they don't check the phone number in the shop.