Moin Moin,
you could return the router any time use the https://www.o2online.de/service/retoure/
to return the router, after the Router returns the rental ends.
Yes you can return the router know.
If you like to buy you own router buy a 7571,2,3,9]0 (AX).
The 7530AX is a good choos. If you need a inexpensive one than took the 7520 used from eBay.
Should be about 60€.
Hello @panurgicnz ,
welcome to the o2 Community .
The router is an option within your contract that you can end at any point. For that just send the router back to us, the information how to return it can be found if you follow the link that schluej posted above. Should you have any further questions, please let us know.
Kind regards, Sven
Thank you very much for the answers :)