Support is far too busy to answer mails. Plus that its very easy-use goole:

interrail: exchange/refund of passes and it all shows up-depends on what type of pass you have bought, Should also be in the confirmation mail you got after buying

I have bought the 1 month pass and I wish to change it for the 15 days within 2 months. I don't wish for a refund or to get the money difference back, I just wish more time between travel days. I'm clearly new at this and made a bad decision.

I understand costumer support might be overwhelmed at this time with so many people traveling. But I don't know what to do. The information is not clear.

I can deactivate my pass but that will lead me to a refund and new purchase right? At this time I'm not able to do that nor can I wait for the refund of the first pass.

Thank you for the reply. Ana

Here is information about exchanges and refunds.The information is very clear. You must buy the new pass first and then ask for an exchange where you get the price for the first pass less 15 EUR back. This only works if the conditions for your pass allows.

https://www.interrail.eu/en/interrail-passes/ordering-info/refund-exchange-policy

As the information is available on the website I doubt that you will get a quick reply from Customer Support. 

Check the documentation you received with your order and be aware if your pass was part of a sale or promotion (such as the half price sale in May of this year) it may not allow any refunds or exchanges.

I haven't heard from costumer service yet. I think I'll just go with this one and make the most out of it. I don't think things will get solved that easily from what I've seen in other topics. Might as well keep it simple and make a better choice next time.

Thank you all for your help. 

Ana