since 18.3 update (Windows Store) I am unable to install any addon

I found this strange behavior when trying to install PVR IPTVSimple ...after each try, message box told "unable to install the addon".
In the logfile I found this strange part, for which I think the path is wrong

2019-07-07 20:22:55.072 T:8108   ERROR: XFILE::CFile::Rename - Error renaming file C:\Users\Steffen Sammet\AppData\Roaming\Kodi\addons\temp\2134f4e7-bc9d-49e0-99e4-9f096eae5499
2019-07-07 20:22:55.072 T:8108   ERROR: Failed to move new addon files from 'C:\Users\Steffen Sammet\AppData\Roaming\Kodi\addons\temp\2134f4e7-bc9d-49e0-99e4-9f096eae5499' to 'C:\Users\Steffen Sammet\AppData\Roaming\Kodi\addons\pvr.iptvsimple'

Below is the complete log; am I doing something wrong ??

Many thanks for helping !

log moved to pastebin site, link below
Can I highlight the request "Do not post logs in the forum. Use instead." that was just above the posting button?

Log removed and shifted to the paste site - iheyagaqog.kodi (paste)
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since 18.3 update (Windows Store) I am unable to install any addon00