The next days login reward auto unlocks when I claim the current one. I just accidentally accepted the next one in a row and the third could be clicked. Or it looks clickable at the moment.

do you have premium unlocked for it? that's how premium login rewards work:
"Once purchased... Additionally, each day's rewards will be unlocked automatically for you, even if you missed a day! However, you will still have to visit the page to manually claim them. ...

Note: Rewards are claimed in order. Missing a day will not skip over those day's rewards."

I do not have premium. I was able to redeem 2 login rewards in a row and looked like I could get another one if I clicked the next. It did not looked locked as it normally would be.

It shouldn't have, but I wonder if this was somehow related to daylight savings - which occurred on the day you were able to claim multiple times. I use a built-in little timestamp function to process the timestamp string of midnight of the current day. I am wondering if daylight savings broke this and was causing the timestamp to then produce a timestamp from like the previous day or something, perpetually allowing you to keep claiming.

If you don't mind, can you skip a day or two and then try again and see if you can still claim multiple in a single day without premium?

I tested just now for myself and it's working as intended and the code looks correct, so I'm not sure what else it could be right now.

I redeemed today's login reward and the next one is locked like its supposed to be.

Thank you very much for the follow up.

Yea, not sure why it did that. I tried checking online for more information and seems like the strtotime function has had issues related to DST in the past - but a lot of what I'm finding is literally 20 years old lol. I would assume those issues have been fixed by now.

Seems there can be some ambiguity if the time zone isn't clearly declared when parsing timestamps, but the timezone should be properly set and doesn't change.

So yea, all in all, not sure what happened. It's probably something I'll have to keep in mind for next year and hopefully remember to check it out on daylight savings day and see if I can figure out exactly what's going wrong.

None the less, let me know if you have anymore issues with it and thanks for the heads up.

I will post if anything pops up. Tjank you for checking it out