Been perfect for years. However, recently (2/3 months) when attempting to make a purchase online using my normal bank debit card, I am sometimes asked for verification. On entering the "Correct" details and the "Correct" PIN sent to me by my bank, the verification will not work. I have had several long conversations with my bank who have established nothing is wrong either with my banking or their system. Their investigation shows the problem lies with my browser ie. "Firefox". This is causing me untold misery and prevents me purchasing online with my bank. I have no idea how to find the issue or certainly how to fix it. Otherwise my pc is working just fine. Windows 10. I really hope you can throw some light on this. I suspect it has occurred since a Firefox update was installed!!!! William Burns