URL Links

Hi

I am having trouble with using my URL’s for links, either on button blocks, or any other. I have tried several ways to add the URL, including: https://tankstation.co.uk/about-us/ and tankstation.co.uk/about-us/

I have not been able to add links in any blocks on my pages, apart from one, to a button block: tankstation.co.uk/shop

I deleted this to re-enter and now it is not being accepted either, on all occasions i just get the loading icon and no link is created. Would;d appreciate help on this as i’m out of ideas, but I’m sure its something simple that I’m overlooking?