It probably either did not scale up well, or ran into reliability problems which priced it out of the market price of oil. Besides, except fo the DC area, there just ain't enough bird crap around to make any significant quantities of oil and the DC product is mostly hot air which makes it uneconomic to convert.
One factor was increased costs of feed stock. Seems that as soon as they were ready to symbiotically work with the Con-Agra turkey plant, that plant suddenly wanted paid for their waste that they had previously been paying to get rid of.
A second factor was public complaints. They could not control the stench of the supposedly stench-free process. It was reportedly worse than early paper mills, and IIRC put them in violation of their permits.
IAC, it was far from a rousing success.