Before I ran gunbot with 40 pairs on Polo, with no problem. I tryed with only 1 pair, and I have the same issue. Yes, I stopped gunbot, many times, wait and restart. Same thing.
bot delay is 80sec, and I set fail delay to 80sec too (was 40sec), to avoid 429.
I wrote to Gunthar, and he said it's a polo overload, not my side :<
Thanks.