Not able to add something to cart (shop is in iframe)

I have a Woocommerceshop, which is embedded in another page via an iframe.
Now I have the following problem:
If I want to add a product to the shopping cart within the iframe, it does not work in Google Chrome and it does not work on my iphone. On all other browsers on the desktop that I have tested it worked without problems.
I get the following warning from Google Chrome:

Because a cookie's SameSite attribute was not set or is invalid, it defaults to SameSite=Lax, which prevents the cookie from being set in a cross-site context. This behavior protects user data from accidentally leaking to third parties and cross-site request forgery.

Resolve this issue by updating the attributes of the cookie:
Specify SameSite=None and Secure if the cookie is intended to be set in cross-site contexts. Note that only cookies sent over HTTPS may use the Secure attribute.
Specify SameSite=Strict or SameSite=Lax if the cookie should not be set by cross-site requests

Can I change this SameSite parameter of the cookie somehow?