For about 2 months I have this error on Polygon network
Transaction was not mined within 50 blocks, please make sure your transaction was properly sent. Be aware that it might still be mined!
I clear all activity data from MetaMask, I install also MetaMask on Brave and firefox and same error. I also trying to do this on Android phones
Everytime when I do this, I change Gas limit to 100.000
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