I'm a layman and a WP noob so if I may be so greedy, in addition to asking for your help, I'd appreciate it if you err on the side of condescension - I'd rather you talk down to me than over my head :)
The problem: the message "Failed to send your message. Please try later or contact administrator by other way" comes up when I test my form (www.trydublionme.com).
What's frustrating is that I had it working but have had to re-setup the site after moving from the last web host to current (inmotion to namecheap if it matters).
Any help would be appreciated (pointing out the problem and a specific solution would be grand, although I'm a beggar so I'm certainly not going to be a chooser.