Sign In endless loop

Hello folks,

my issue is a little bit tricky, but finaly im not going to find a solution by myself.

I alreday managed in the past, to get Site Kit runnig on my acutal page with Analytics (but not with search console-data). Now I had to make some upgrades, i thought about changing my permalinks (but made some misstakes and so I used a backup and some sql corrections to reactivate my page) but now im am on a point, that I cant get site kite running again succesfully.

I think, there is some issue with my WordPress/Website-Url and the redirections from google back to my backend. Also im not sure if my domain and Folder Structure is very well or if I do there some mistakes (thats why i tought about chancing my whole permalink-structure, but missmanaged that).

My URL ist http://www.andi-szabo.de

But my WP is installed in the subdirectory http://www.andi-szabo.de/blog at my hoster. So im not realy sure, which directorys i have to write down where.

Ive spottet the case some times, when sign in to site kit, it redirects me to

http://www.andi-szabo.de/blog/andi-szabo.de/wp-admin… and so on and gets a 404.

When i manualy delete at the url beginning “www.andi-szabo.de/blog/” it brings the success screen, but when i come back to dashboard, i have to do the whole “sign in” thing again.

– I also tried to change back from https://www.andi-szabo.de to http://www.andi-szabo.de

– Some times it prompts me, to sign in http://www.andi.szabo.de – sometimes http://www.andi-szabo.de/blog

– I reseted site kit.

– I have no firewall and i dont think there is an issue at my hoster, beacuse before my backup-thing, site kit run (except of search console data).

– I used incognito-mode,
– i deactivated all plug ins beside of site kit.
– I tried PHP 7.2, 7.3 and 7.4 at my hoster.

`
### wp-core ###

version: 5.3.2
site_language: de_DE
user_language: de_DE
timezone: Europe/Berlin
permalink: /%year%/%monthnum%/%day%/%postname%/
https_status: true
user_registration: 0
default_comment_status: open
multisite: false
user_count: 1
dotorg_communication: true

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