Unlocking 1Password suddenly required many times a day

I use 1Password for Mac 8.12.21 on a Mac with macOS 15.7.7. I switched to 1Password 8 a few months ago from 1Password 6. My main browser is Firefox, and I quit and restart it many times a day. Whenever I start it again, I also have to log in again to websites, such as a Google account, because I have set Firefox to delete all cookies and other data each time I quit. Having to log in to many websites repeatedly every day is not a problem because that's what I use 1Password for. This is how I want it – starting again and again with a "fresh" browser.

Until a couple of days ago, 1Password 8 worked like 1Password 6 did for many years and 1Password 8 did for the last few months: After starting the computer in the morning, I have to unlock 1Password the first time I use it. After that, I don't have to unlock it again when logging in to websites (even after quitting and restarting Firefox), unless I don't use the computer for several hours. 

However, for the past couple of days, I have been repeatedly asked to unlock 1Password 8, even though I have been working on my computer the whole time. Sometimes I have to unlock 1Password 8 again after five minutes; other times, after thirty minutes. There is no pattern that I have recognized so far.

Please take a look at the attached screenshots of my 1Password 8 security settings. Then, please let me hopefully know what is not working correctly and how to get it to work as it did before.

As a precaution, note that I don't want to unlock with Touch ID, nor do I want 1Password to unlock with the computer. I want to unlock 1Password 8 once in the morning and not have to do it again unless I'm away from the computer for several hours. Also, I would like to reiterate that 1Password 8 was functioning properly until just a couple of days ago.

Thank you.