Так поправить htaccess
вангую у вас там есть редирект на https и он не работает на этом конкретном хостинге
один из этих вариантов обязательно сработает, некоторые даже подписаны
если не знаете что выбирать делаете print_r($_SERVER)
и выбираете где переменная на что-то похожа из этого списка
litespeed
rewriteCond %{HTTPS} !on
rewriteCond %{HTTP:X-Forwarded-Proto} !https
rewriteRule ^(.*)$ https://%{SERVER_NAME}%{REQUEST_URI} [R,L]
ukraine
RewriteCond %{REQUEST_FILENAME} !^robots.txt$ [NC]
RewriteCond %{HTTP:SSL} !=1 [NC]
RewriteRule ^(.*)$ https://%{SERVER_NAME}%{REQUEST_URI} [R=301,L]
RewriteCond %{HTTP_HOST} ^www\.(.*)$ [NC]
RewriteRule ^(.*)$ https://%1/$1 [R=301,L]
RewriteCond %{REQUEST_URI} !^/robots\.txt$
timeweb
RewriteCond %{HTTPS} =off
RewriteRule (.*) https://%{HTTP_HOST}%{REQUEST_URI} [R=301,L]
RewriteCond %{HTTP_HOST} ^www\.(.*)$ [NC]
RewriteRule ^(.*)$ https://%1/$1 [R=301,L]
mirohost, beget
RewriteCond %{REQUEST_FILENAME} !^robots.txt$ [NC]
RewriteCond %{SERVER_PORT} !^443$
RewriteRule .* https://%{SERVER_NAME}%{REQUEST_URI} [R=301,L]
RewriteCond %{HTTP_HOST} ^www\.(.*)$ [NC]
RewriteRule ^(.*)$ https://%1/$1 [R=301,L]
beget
RewriteCond %{HTTP:SSL} !=1 [NC]
RewriteRule ^(.*)$ https://%{SERVER_NAME}%{REQUEST_URI} [L,R]
RewriteCond %{HTTP_HOST} ^www\.(.*)$ [NC]
RewriteRule ^(.*)$ https://%1/$1 [R=301,L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^([^?]*) index.php?_route_=$1 [L,QSA]
RewriteCond %{HTTPS} =on
RewriteRule (.*) https://%{HTTP_HOST}%{REQUEST_URI} [QSA,L]
RewriteCond %{REQUEST_FILENAME} robots.txt$ [NC]
RewriteCond %{ENV:HTTPS} !on
RewriteRule ^(.*)$ https://%{HTTP_HOST}%{REQUEST_URI} [L,R=301]
RewriteEngine On
RewriteCond %{HTTPS} =off
RewriteRule (.*) https://%{HTTP_HOST}%{REQUEST_URI} [QSA,L]
RewriteEngine On
RewriteCond %{SERVER_PORT} !^443$
RewriteRule .* https://%{SERVER_NAME}%{REQUEST_URI} [R=301,L]
RewriteEngine On
RewriteCond %{HTTPS} off
RewriteCond %{HTTP:X-Forwarded-Proto} !https
RewriteRule ^(.*)$ https://%{HTTP_HOST}%{REQUEST_URI} [L,R=301]
RewriteEngine On
RewriteCond %{HTTPS} off
RewriteRule (.*) https://%{HTTP_HOST}%{REQUEST_URI}
RewriteCond %{HTTP:X-HTTPS} !1
RewriteRule ^(.*)$ https://%{HTTP_HOST}/$1 [R=301,L]
RewriteEngine On
RewriteCond %{HTTP:SSL} !1
RewriteRule (.*) https://%{HTTP_HOST}%{REQUEST_URI} [QSA,L,R=301]