proxies with puppeteer but sites still catch me?

invalid@example.com (Instant), Instant
Sun, 18 Jan 2026 15:34:15 +0000
Proxies

yo so im using these datacenter proxies (cheap af) with puppeteer and stealth plugin. followed a tutorial. but my scraper keeps getting blocked on shopify sites after like 5 minutes. they just show a captcha and its over. my code looks right (i think). are the proxies just trash? or am i missing something else sites check? ngl i thought stealth plugin was enough. help pls