Hi rigiduser,
The e-mail signup fom would require MailChimp for WordPress plugin by ibericode to be installed before you import the demo.
As for the login problem – it looks like the vendor registration and dashboard pages and/or the default woocommerce pages (including the My Account page) are not set properly.
Could you, please give us a link to your site and temporary admin account access details, so we can check this problem for you?
Regards,
Dimitar
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