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](https://docs.easyeda.com/en/PCB/Route/index.html#Local-Auto-Router)<br> <br> 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](https://easyeda.com/forum/topic/Bug-footprint-VSSOP-8-L2-4-W2-1-P0-50-LS3-2-BR-for-PCA9306DC1-Autorouter-Stuck-be8b9afac6484c9880a76a8c4c4a1f12)<br> <br> 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).