I read through the old thread too and it didn’t pull anything up for me. Setting up an RSS feed for that website and integrating IFTTT with smartthings. The only problem is you probably have to “login” to that website, so the RSS feed probably won’t work.
Instead there may be a way to have alexa tell a virtual device in smartthings the sensor level and send alerts to smartthings. Wish I was more helpful but this thread may be a possible road: [RELEASE] Ask Alexa