Perhaps related? I just got this email from BW. Now (?) you need to call them to change the password? Seriously?

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IMPORTANT INFORMATION REGARDING YOUR BEST WESTERN REWARDS ACCOUNT
Best Western is committed to safeguarding the confidential information of our guests and wants you to be aware of the changes to how you access your Best Western Rewards account and redeem points.

Continue to go to bestwestern.com in order to:
Book your next trip
Check your point balance
Redeem Best Western Rewards points for free nights, gift cards, and other items.

If you would like to make a change to your account including updating your mailing address, email address, or password, please contact the Best Western Rewards Service center at 1-800-237-8483.

As a reminder, please take proper precautions to help secure your Best Western Rewards account against unauthorized access. We recommend that you:

Use a complex password and update it regularly
Use a password for your account that is unique and different from other account passwords
Check your account regularly to ensure all activity is yours
Promptly report any suspicious activity to us at 1-800-237-8483