I am sorry to hear about your unpleasant experience.
According to the log there is some issue with the libcef.dll located at C:\Users\Danx_000\AppData\Local\Telerik\BlackDragon\Cache folder.
Would you delete this folder and check for improvement?
If the issue persists, uninstall AppBuilder, remove any folder left starting with "icen..
" in your C:\Users\Danx_000\AppData\Local\Apps\2.0\ZYX1Y62E.OYT\OC69HYJX.G62 folder and install the client again.
I look forward to hearing from you.