I had been using PDF Pen, PDF Expert and Preview for 14 years.
Last year, I switched to the Adobe Creative cloud. I already was using Adobe’s Photography plan. Being an Adobe Acrobat user at work and given the constant issues with other apps (almost as good as Adobe Acrobat is not the same) I jumped onto Adobe’s Black Friday offer for charity (EDU): I pay 15 Euro per month for all of their apps. If I recall correctly, it will increase to 19 Euros in the fall. Well worth it to me. If I add up all of those app subscriptions or licenses that need to be bought for alternative software I had been using before, I am almost at that price point.
That is not the solution for everyone. My suggestion would be to use Preview. It does a lot more than one might expect seeing it at first glance. If not, PDF Expert and PDF Pen are ok alternatives. Both of them have their individual strengths and weaknesses. If you know Adobe and if you are eligible for EDU pricing, it might be an option to just use it instead of constantly struggling with issues other vendors have…