User activation with email or admin: 403 error

For user registration in Joomla Configuration I chose:
Allow Registration: NO
Activation of new users: via Email (see photo)
In Membership Pro I chose:
Registration integration: YES
Generate password automatically: YES
Send Activation Email: YES
When a user registers, an email arrives with the activation link, like https://mysite/component/users/?task=registration.activate&token=a85694aa2a165b6edc0339dd1d946415&Itemid=142, but if the user clicks on the link or enters it Error 403 Access not allowed "/home/mysite/domains/mysite/public_html/components/com_users/src/Controller/RegistrationController.php (53) appears in the browser.
Same problem and error if I choose Activation of new users: Administrator. Same error on two different development hostings.

I tried allowing registration through the original Joomla form and confirming activation via email and via Admin and both work fine, without errors. With Membership it gives no problems only if I choose NONE to activate.
How to resolve the 403 error and allow Membership subscription with email activation or admin?