Yes it looks like one of my chipmonks lol
You can see how it effected your depth of focus dramatically at longer distances. Youshouln't even need it in most cases with that zoom power. You might need a tripod unless your super steady.
Is it a generic tele convertor I dont see any listed for your model I have the SX50HS similar to yours. I use adapters to mount a 2X tele convertor that Ive had for an older model Powershot to mine but only on close shots with very little zoom.
I've found with 50X zoom I don't need it.