Just firefox and browsing the site as I assume a normal person would. No one else on the network uses itch(it's a house with a private router). I usually go to the homepage, then to my feed. After about the second asset I click is when the rate limit errors start showing up. I do usually actually download the assets from the app. I totally get why you have the rate limits, but I really shouldn't be doing anything to trigger them.
Viewing post in Way too easy to get error 429 when using itch
This was happening to me a lot lately. I don't bulk download either. And also I kept seeing "a new version available" all the time on top right. I click it and it seemingly installs successfully (because no errors) but in fact, nothing happens. I think the auto-installer helper is running in the background and fetching a lot of data repeatedly. Then failing and then fetching again. I installed it manually and I think it's gone now.
I think I was stuck on 25.5.1 if I remember correctly and now upgraded to the latest (25.6.2)