Its a security feature to verify that you are the person who owns the account.

 

I understand that. But I always check "don't require OTP for this browser." Previoulsy it wouldkeep me logged in, as desired. Now this every day occurrence is becoming annoying.

 

Check if you have turned on - two step verification
in your account
login and security

also is this for purchases on amazon or some other aspect of amazon
You need to provide more detail

also the

"don't require OTP for this browser."

places a cookie on the browser so if you clear cookies it will not work

 

I agree that some more information is needed. Also, Amazon requires OTP for some orders. Please provide us some more details.
Thanks

 

This is for Amazon seller central log in, as well as Amazon KDP. I have not cleared cookies for quite some time.

I did log in on my laptop in a different location 2 weeks ago, but since then I have used the same device in the same location, same IP, no VPN, no incognito mode. I am really not sure why this happens everyday.

 

This is for Amazon seller central log in

I suggest you ask the experts
AMAZON

seller accounts are quite different to normal AMAZON purchase accounts

 

this is for Amazon seller central log in, as well as Amazon KDP

What COURIANT has suggested may WELL be correct

Have you tried a different browser? I know Chrome (in my experience) can be finicky

HOWEVER I would urge you not to try a different browser, UNLESS you have previously logged into your Amazon SELLERS account and your Kindle Direct Publishing Amazon account with that different browser.

I still say the way forward is to contact AMAZON
If this requirement for the ONE TIME PASSWORD is for some reason being required because AMAZON suspect something amiss with the account - YOU MAY FIND yourself locked out by Amazon and unable to access your sellers account - which I presume would be more than just a minor inconvenience.

 

To answer questions - it usually requires it every morning, when I pull up the login page the first time of the day. It stays logged in the rest of the day. Sometimes will stay logged in 2 days. But usually 1x per day I go through the OTP step. It is only with Amazon, and this actually only began being a regular occurence about 1 month ago. No idea why.

I did ask amazon seller support, which wasnt that helpful. Just said some things about cookies, logging in from a different IP, and other things that do not apply to me.

 

said some things about cookies

It sounds like your browser removes cookies as you close down the browser/computer.
You need to see what cookies are there after you have logged into Amazon and save some of them.

 

Are you able to see any attempts to log in from different geolocations? Other than that, it sounds to be a security timeout that may have been changed for those Amazon sites. I now recall a while ago when I was ordering from my wife’s account, even though she was showing logged it, it prompted for a username and password.