I tried (amouts of 212121 sats) and you are right Alby and Blink work all the time, but impossible to send to Bitkit for example. But it succeeds to reach my own node for some reason (big channel with ACINQ I maybe)... 

But still is' strange from a pleb node runner point of view, when our own small nodes can send without any problem and an LSP can't lol