How can I let customers without accounts apply to become buyers directly from our login page? And what is the application entry point on the mobile version of the login page?

Go to Organization & Settings → Company Profile → Brand Assets → Login Page Subdomain Settings and turn on "Open Buyer Online Application" (toggle saves automatically). When enabled, your subdomain's login page will display "Want to become a buyer for this company? Apply to become a buyer". On the mobile version login page, the registration entry is the same "Apply to become a buyer", not a new Patisco platform account registration. Customers must fill in recipient name, email, company name, country, address, city, postal code, phone number, etc., and read and agree to the terms before submitting. After submission, "Application submitted" is displayed. You review and notify via email. This address is used as both the company address and shipping address. Note: Customers must access from your own subdomain for the application to reach your company. The entry only appears on the desktop login page when this toggle is on. The same toggle also controls "Join as Member" on the public pages. Patisco currently does not allow self-registration for new companies—new companies must be invited.