Stuck in redirect 301 after htaccess script domainname forwarded

My site is stuck redirecting domainname/ to domainname/subpage

Tried to redirect urlone/ to urltwo/ with regular 301 redirects in .htaccess but didn’t work – then found a script from old post: https://wordpress.org/support/topic/proper-301-redirect-in-htaccess – and edited the urls to my own.

Site crashed. I restored from just previous backup. Site runs, but will not show frontpage or domainname/

Made sure the .htaccess file is clean. Tried earlier backups – still stuck.

Here is the script: ( wanted index-1.html to redirect – now the domainname/ redirects – even with a clean file with just wordpress code.

RewriteCond %{HTTP_HOST} ^iphone-serviceshop.dk$ [OR]
RewriteCond %{HTTP_HOST} ^www.iphone-serviceshop.dk$
RewriteRule ^index-1.html\$ “http\:\/\/www\.iphone-serviceshop\.dk\iphone\/-mobil\/-reparation\/-koebenhavn\/$“ [R=301,L]
# BEGIN WordPress
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /
RewriteRule ^index\.php$ – [L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /index.php [L]
</IfModule>

# END WordPress

Thanks alot for looking into this.