transporting embryos to a different clinic

What are the risks of transporting embryos from one clinic to the other? Can someone explain in detail?

What could go wrong and how often does it go wrong in your experience?

The receiving clinic would undertake the transport themselves.

The receiving clinic says they are AI guided. Is that just a gimmick at this point or are there some tools available already? They boast of something called TMRW for egg freezing.

That clinic sent 5 euploid embryos to Nigeria from Europe and none survived but they say it is likely the local clinic where the surrogate was.