I got served with an invalid certificate too, just for one hit, then the site loaded normally. Haven’t made a screenshot, but the certificate was issued by crewai dot com.

All I could find was this reddit post - https://www.reddit.com/r/PorkBun/comments/1jash9f/porkbun_ha... Edit for clarification, Porkbun loads fine for me, saw nothing abnormal there.