Fresh installed Magento 1.92 customer cannot log in and no guest checkout

I have a Magento 1.92 store, which has been newly installed and only the db was imported from the old store. Everything is working without issues except the following problems: [login to view URL] customers cannot log into their existing accounts. 2. When asking the password to be sent to them Magento does not react and stays stuck on the page asking for the email to be filled in after it has been filled in and 3. Guest check out has disappeared.