Thanks for reaching out @rejokes. So we can determine more on this, please share the following:
- Your Site Health information. You can use this form to share privately if preferred.
- As this error usually only occurs during setup, did you already have the plugin connected successfully? If so, did you become disconnected at some stage or did you reset the plugin on these sites before then attempting set up once more?
- Do you see any warnings or errors when checking your Site Health status (Tools > Site Health > Status), which differs from your Site Health information requested above? Such errors may include REST endpoint references.
As we didn’t receive a response I’ll mark this as resolved. Feel free to open a new support topic if you continue to encounter issues, or reopen this topic and we’d be happy to assist.
Note also we are aware of an issue with some Hostinger sites last week, which may have impacted Site Kit on your site. I’m aware this has since been resolved. If this isn’t the case with you, please do let me know.