Issue description

@PaTara43 has already mentioned this, but once again. If you even accidentally refresh the page or go to another one while purchasing a subscription, then the initial subscription configuration is not created, and it must be filled in manually.

This scenario is not currently described in the wiki. Suggestion:

1. Fix it on the dapp side (is it possible?)
2. Describe the scenario when you need to enter a subscription manually
3. Make a big warning that YOU CAN'T LEAVE THE PAGE WHILE PURCHASING (incomplete solution)

Doc Page

https://wiki.robonomics.network/docs/sub-activate/