Others have recently reported similar. I noticed you are blocking some stuff in the browser, try turning off you add block to rule out issues (probably won’t make a difference).
I’m moving some clients over to Basin as @webdev has recommended here many times.
So far, looking phenomenal. Much better looking email notifications, and spam isn’t “blocked” it’s spam-foldered, so you can scan through it. Plus, it handles reply-to without the unsubscribe link problem, and can send a separate email to the form-submitter.
First test form moved had 53 spam submissions in 2 days, and 4 good leads. Worth it. Basin identified every one of them properly.
I’ve also added a Basic-aware form response handler to Sygnal Attributes to support Webflow’s success/fail messages.