Staking ONT works fine, I can see the ONG amount increase with time and have enough ONG to claim but hangs on claim saying fetching transaction records. I am using O3 wallet on Android I have uninstalled the app and reinstalled but stays busy fetching records when try to claim. My address AH1m1NvjTunw8K8vBTsgLtJ9txoQuFmbnd
There is currently an issue with the Ontology network that causes this to occur.
As a temporary work around, please try sending yourself 2 ONT. This should fix the issue and allow you to sync and claim your ONG.
Sorry for the inconvenience .