Wiper linkage

Ok guys at the risk of sounding stupid I need help. My 73 Dart wiper linkage arms keep falling off. I have not figured out what I am doing wrong. The arm that hooks too the wiper motor will not stay on. I ordered a clip that I thought was going to fix my issue the clip does not. I have pics on my phone that may help explain my dilemma. Any help would be appreciated. Thank you.

IMG_20211026_145117446.jpg

IMG_20211026_145928241.jpg

IMG_20211026_145936656_MP.jpg

IMG_20211026_145045547.jpg