What codes are the right ones to choose for a bulletin board with paid access to contact information?

Question

Business Informatics

There is a site. I am collecting information (ads) and its publication on this site. I publish ads personally and do not charge for publication.
For visitors, access to contact information contained in the ad is paid and is provided by "subscription" for 1 day, week, etc.
What codes would be correct to choose?
Here are my considerations: 63.12, 63.99, 73.11.
I'm not sure if this code 73.11 will work, because logically I should charge from the owner of the ad, and not from the consumer. But I already made it in case I place ads.
The codes that have already been entered in the record sheet are 62.01, 62.02.9, 73.11, 63.11.1, 62.09.
This is the first time I've come across entrepreneurial activity, so I'm experiencing a number of difficulties.
Many thanks to all who responded!

Answer 1

In order not to hang unanswered ...
When registering, you can specify a lot of codes. More than 20 for sure. So feel free to list everything. 63.12, 63.99.x are great codes for you.
In fact: you shouldn’t really bother with codes. I had an LLC and we retailed toys online. But by mistake, I indicated "Wholesale trade in metalworking machines" as the main code. I noticed it myself after about 5 years of work.