I have downloaded the free Shuggah app this morning which has accepted my current sensor without any issues and seems to be reading everything well. I feel comfortable and confident using this until Abbott/Libre get their act together.
Just spoken to Abbott Helpline after a 1 hour wait - basically have been told that there is a problem and there is no ETA for a fix. I presume that they will get it sorted but weird that I couldn't find anything about it on their website or twitter given that they are acknowledging that there...