I can't find anywhere to report these issues, but having massive problems with Shopify dashboard this week (based on east coast of Spain), I've spoken to other Spanish users who are having similar issues.
API calls to admin/internal/web/graphql/core are taking up to a minute and often timing out (I have a 200mb p/s download speed so this is definately a Shopify issue).
I guess there is some hardware fault in your European CDN or something, but definately worth taking a look at, https://www.shopifystatus.com/ reports all systems green, certainly not the case for us!
The Shop Front: Welcome to the eCommerce platform with integrated video, audio and chat. Engage with your customers online and offline with multi-channel conversion tools. Edit your products and prices in realtime and stream them privately. Available in the App store: https://apps.shopify.com/the-shop-front