Hi, @Dolev97. I'm happy to help you out with this!
It looks like you're going through the right steps to select a plan so this shouldn't be happening. In this case I'd recommend some more local troubleshooting to rule out any issues caused by the browser, device, or internet connection you're using. If you're still seeing this issue after going through the steps below, please reach out to our support team through this page, so that we can look into this with you further. We can't see any account details here over the Shopify Community, but if you speak with us through the page I shared we can review this with you in more detail.