I often use EasyEDA without any problem, but for the last 10 days, I can't get to the end of the step that allows me to make the PCB of the circuit using the "Auto router" command. I always reach the 72% blockage. I tried on the server and locally, same thing.
I used 2 layers then 4 layers, same thing. I specify that I am with the last version V6.4.19.4.
Thank you for your help.
Alain
Brand new interactions and interfaces. 
Easy to use and quick to get started. 
I have had no trouble using the autorouter in V6.4.19.3 but there have been several reports from users of problems with it.
As well as the advice given at the end of this section of the Tutorial:
https://docs.easyeda.com/en/PCB/Route/index.html#Local-Auto-Router
please check out this post:
https://easyeda.com/forum/topic/Bug-footprint-VSSOP-8-L2-4-W2-1-P0-50-LS3-2-BR-for-PCA9306DC1-Autorouter-Stuck-be8b9afac6484c9880a76a8c4c4a1f12
just in case it is a problem with a Footprint. (Unfortunately the OP of that topic did not provide enough public information to be able to diagnose the specific problem in the forum).