Looking to advertise your services in Berlin Germany? Berlincompanions offers free advertising for agencies and independents in the city of Berlin.
https://www.berlincompanions.com/

Hello interested ! I already checked the website but have some questions.,could you please PM me ? Thanks

Found this in the rules thread;

Advertisers cannot receive, send or reply to private messages, so it is important that your post makes it clear how members can contact you - you can add an email address to your profile or post a phone number if you prefer. Do not post responses to private messages on the public board. Full members, please contact an advertiser by the method which they have requested - if there is a phone number or email address, use it rather than posting responses on the board they are unlikely to see.

You'll need to contact them themselves via whatever contact details are on their post or website.