Rainbow wallet v.2.9.5 staking/delegation problem

Hi folks, I’m new here, so not sure if I’m in the right place. I’ve been staking IRIS tokens for about 6 months via Rainbow wallet v.2.9.5. Then about two or three weeks ago, I stopped accruing IRIS rewards without taking any action to cause this. Reached out to the validator and to IRIS net via email but received no help from either. I tried undelegating my stakes but the attempted transactions failed repeatedly. I’m thinking maybe it has something to do with the Mainnet upgrade, but I could find no alerts, instructions or guidance for stakeholders as to any necessary actions to take. Can anyone provide any insight on this, perhaps a way I can resolve the problem and get my tokens back to a happy staking state? Thanks for any input.