If it doesn’t look right on Aisler, then assume that it isn’t right. No matter what it looks like in fritzing or gerbv, if it doesn’t look right on Aisler, then it won’t be right. How Aisler’s software sees the board is how Aisler’s software will create the board.
I’ve only designed 1 custom pcb board before for fritzing. Looked fine in inkscape, looked fine in fritzing, upload the board to OSH Park for production, and it was missing the top edge of the board. I contacted them about it, and they fixed the problem on their end, but it was my fault. Turns out the outside outline of the board was not a complete path in Inkscape - the start and end of the path wasn’t connected. I don’t remember if I checked the files in a gerber viewer program like gerbv or not.
I tried to download your file to look at it, but get the message it’s been removed.
Anyway, as I said, if it don’t look right in the software on the fab website, then it won’t be produced right…
Randy