Somebody should have called Ardman
Here are some helpful tips for designing an Olympic mascot from scratch:
It should look athletic, so that it may be plausibly animated participating in various sporting activities. Just because CGI makes it possible to animate a ton of bricks or a gelatinous blob doing a high jump does not make it appropriate to do so.
It should relate to the host country, eg through history, folklore, national dress, physical characteristics
It should relate to the rest of the art & design that is being done for the Olympics, such as the logo, architecture etc
Alternatively, rather than starting from scratch, you might ask what A-list animated characters may be signed up for the Olympics who are distinctive to the host country, adaptable to the task, and recognised the world over? Few host countries are even able to answer that, but Britain certainly can; with Wallace & Gromit probably being the most promising contenders.
Surely they'd be better than a couple of contrived unnatural blobs that have clearly been designed deliberately to be raceless & genderless, and accidentally to not look cabable of any athletic endevour or have any coherence at all with the logo.