I made a payment to read and use the thread about 1Indexer.
However, I couldn't access the dashboard and sent an email, but there was no answer.
Do you have any contact information other than email?
I am sorry for my poor English. I used a translator.
There was a thread recently with the poster also not able to access 1indexer's dashboard or get any response from the service. You are probably best off trying to get a refund if they don't respond to you.
https://www.blackhatworld.com/seo/do-you-know-how-to-use-1indexer.1502282/