For the website to function correctly for you, it is important to make sure that you are using the most current version of the web pages. Clearing your web browser’s cache ensures that it delivers the most up-to-date pages to you & so it is recommended to clear your browser’s cache if you are finding difficulties.
Alternatively, you can try opening a private or incognito window in your browser, (since this does not use stored web page data), before logging in with your membership details.
The below links contain instructions about how to open private/incognito web browser windows & how to clear your browser cache & can be used as a guide dependent on the web browser you are using:
Google: Chrome
How to Go Incognito in Google Chrome:
https://support.google.com/chrome/answer/95464
How to Clear the Google Chrome Browser Cache:
https://support.google.com/accounts/answer/32050
Microsoft: Edge
How to Browse Privately in Microsoft Edge:
How to Clear the Microsoft Edge Browser Cache:
Apple: Safari
How to Use Private Browsing in Safari:
https://support.apple.com/en-gb/guide/safari/ibrw1069/mac
How to Clear the Safari Browser Cache:
https://support.apple.com/en-gb/guide/safari/sfri47acf5d6/mac
Mozilla: Firefox
How to Use Private Windows in Firefox:
https://support.mozilla.org/en-US/kb/private-browsing-use-firefox-without-history
How to Clear the Firefox Browser Cache:
https://support.mozilla.org/en-US/kb/how-clear-firefox-cache