Hello,
First of all, thank you for your purchase.
This seems to be a website misconfiguration, this appears when your WordPress site does not manage to get write permissions to your server’s storage (this is why it asks you for FTP info).
Please contact hosting provider’s support and tell them about this issue, they should be able to fix this.
Also, please check details on this issue, here: https://maheshwaghmare.com/wordpress/how-to/fix-perform-requested-action/
More: https://wordpress.org/support/topic/to-perform-the-requested-action-wordpress-needs-to-access-your-web-server-2/
I hope this info helps.
Regards, Szabi – CodeRevolution.