I sometimes find this series hard to follow and remember things this is my first read through so forgive me 

 

But Suiin the Amylin seat but she is stilled goes on the run with Min Eylane how come Bryne doesn’t recognise them when they start working on his farm is it because suilyn has lost her powers

The act of stilling changes how a woman looks, Siuan and Leane Sharif the former Keeper (not Elayne) look much younger then before they were stilled but its the older woman made younger not how they look when they were younger. Bryne only ever met Siuan once, some years before so not really that surprising he did not recognise her.