#381 and#389 looks great. Can you please try one version with the slogan "pay by SMS" interrupting the frame at the lower right position. The slogan size can be than a bit bigger, don't you think?
We decided to work with #389 and we are close to the perfect logo for us. There are just two adjustments that we ask you to do.
1) the slogan won't be readable if the logo is smaller (which it will be on our clients websites) Therefore I kindly ask you to put the slogan outside the frame (what you have in #389 just flip it outside the frame on the lower right corner) You need to find a way to make the blue background of the slogan fit nicely with the frame. If you don't know what I mean I could send you a pic via email.
2) we decided against the white line in the "Y" so please make the "Y" like in #382 with one small adjustment, please make the leg of the "Y" shorter without changing the endpoint of the "arms" of the "Y". I believe this will make the angle of the Y-arms look even more like a check mark. If you don't know what I mean I could send you a pic via email.
When we are done we would like you to send us also the final logo with the alternative colors for darker backgrounds that you used in #384, #385, #386, and #390. Is that OK for you?