In case your XBert browser extension is having issues, these are some potential fixes we've found to work over time.
General Troubleshooting
For all browsers, you could try:
Updating your browser to the latest version
Fully closing and reopening your browser, then logging back into XBert
Disabling any browser extensions, fully closing and reopening your browser, then logging back into XBert
Checking your browser settings to ensure you're not operating in a strict privacy
mode - this can sometimes block websites and extensions from working if your
browser settings are too restrictive
If you have any anti-virus software installed, sometimes these come with a web protection add-on that can block certain websites or extensions from working. If you have any software like this, it's worth trying out temporarily disabling it and seeing if this helps
Trying out a different browser like Mozilla Firefox, as this can help narrow down whether the issue is browser related or Operating System related
Mozilla Firefox Troubleshooting
For Mozilla Firefox, you could try: