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Transferring CMS Plan to another project

Hi there!
I developed a website for my client. Ith has more than 50 CMS items so I told them that theu need to purchase the CMS plan. They opened up an account and purchased that plan. The problem is, I transferred the site to their account 20 mins ago and saw that the CMS plan is on the default project. How can I transfer the CMS plan to the project I developed? I contacted Webflow about this but there’s a 7 hour difference to where I live, it will be too late for this. Please help. Thanx in advance.