Another vote for sharpen the blades. Unless you really knocked the auger hard enough to throw the angle off ..... but I'm thinking that would have to be pretty hard.
If you want a manual ice auger ...... buy a Nils ...... it cuts an inch a second ....... no other hand auger remotely approaches that speed.
The design is completely different than anything else out there ..... have a look ...... no down pressure required.
https://www.youtube.com/watch?v=-AUDlplSNLQ
https://www.youtube.com/watch?v=KvuAFT3ybNU
https://www.youtube.com/watch?v=umrNewM7gZA