If you don't add ?paypal=1 to the curltester URL, then it won't test PayPal for you.
Use: /extras/curltester.php?paypal=1
Explained here: http://www.zen-cart.com/showthread.p...-Testing-Tools
A (28) Connect timed out message is ALWAYS a hosting problem, if you've properly got the CURL Proxy disabled. Especially if it "suddenly" breaks. Your hosting company will need to fix it.
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