-snip- but can not move further to open LN channel in Electrum connected to testnet as the wallet's Open Channel button remains in the gray state. The wallet is topped up with 0.01 tBTC which, from my understanding, is enough for channel support. The button remains inactive no matter whether trampoline is disabled or not. I would appreciate any suggestion on how to overcome things that block me from LN channel opening with Electrum.
The two things that you may have missed are:
- Lightning should be enabled in the menu "Wallet->Information" if it's not ticked at least once yet.
- The wallet's script (address) type should be Native Segwit, other types aren't compatible with Lightning.