That's what i did:
I cofigured the first ESP1 as AP with...
AT+CWMODE=2
AT+CWSAP="TESTAP","12345678",3,0
....the second ESP2 as a Station with...
AT+CWMODE=1
As a test i did a connect from my PC to the first ESP1 that is an AP and it works.
Then i did connect from my second ESP2 that is a Station to my Android-Smartphone that is acting as AP and that works too.
So it's confirmed that both devices are working as expected.
But if i try to make a connect from my ESP2 to my ESP1 i always get the following Error:
Send: AT+CWJAP="TESTAP","12345678"<cr><lf>
+CWJAP:3
FAIL
I tryed everything possible but can't get them connect to each other, what is wrong here??
I use newest Firmware V20 on both devices.