New MacBook Pro not seeing iCloud Tabs from Old MacBook Pro

I have a MacBook Pro 2019 that recently stopped working. Genius Bar says it is a logic board issue and simply won't turn on. I got a new MacBook Pro a little less than 2 weeks ago and one of the things I was excited to see was that all of my Safari tabs from my old MacBook were available via iCloud on my new MacBook, despite not being able to turn on the old MacBook. However, the new MacBook now no longer shows the old MacBook as a device with iCloud tabs in Safari. It shows my iPhone and, after turning iCloud sync off and on again, now shows my iPad again as well, but my old MacBook isn't an option. There have been other strange occurrences with my Safari iCloud as well, such as my Safari history now only going back 3 weeks (to before the old MacBook broke), despite having my setting at saving history for one year and the default setting being one month.

I'm overall not sure what is happening with my iCloud, but is there any way for me to recover those tabs considering that I can't turn on my old MacBook Pro to turn off and on iCloud sharing?