Select Settings and then Preferences from the Opera settings menu (top left).

Select the Advanced Tab

Enable Java Script

• Select Content from the left hand menu
• “Enable JavaScript” should be enabled

Enable Cookies

• Select Cookies from the left menu
• “Accept cookies only from the site I visit” should be enabled

Enable TLS security protocol

Select Security from the left hand menu

•  Click “Security protocols”
• “Enable TLS1” should be enabled
• “Enable TLS1.1” should be enabled
• “Enable TLS1.2” should be enabled
• Click OK to close the security protocols window
• Click OK to close the preferences window

Delete Cookies and Files

Select Settings and then Delete Private Data from the Opera settings menu (top left).

• Delete session cookies should be enabled
• Delete all Cookies should be enabled
• Delete Entire cache should be enabled
• Click Delete

Restart your browser, to apply the new settings.