Suggest that you shoot only the tab and forget the glove, if your desire is to switch. I personally shoot a tab with far better accuracy than I do a glove, and it's even more noticeable in colder weather. I shoot the Black Widow 3-under calf-hair tab.
Look at this tab and you'll notice it is a 3 layer tab. Calf-hair / rubber cushion / suede leather. Those 3 layers are separate and able to move independently as the tab flexes and bends. When it is new, these layers haven't really relaxed or formed into what they will after several hundred shots. Break-in is necessary and will yield a smoother feeling release.
As far as you not getting an anchor, bad release, etc...I'm pretty sure a coach would determine you're dealing with a certain amount of distraction from the new tab and hand position. If your mind is on the tab and doubts the results, you'll experience degradation in form and follow-through. Basics are needed:
1. Ignore the tab. Draw to full draw and anchor completely. Do not release. Let the bow down. Repeat this 30 x day until the feeling is automatic.
2. Ignore the tab. Draw and get to anchor. Shoot at 5 yards and pay no attention to what the arrow does. I repeat...ignore the arrow, too. Just draw, anchor tight and shoot. Repeat until this feels automatic. Keep ignoring the arrow. Might take a couple weeks or months.
3. Ignore the tab. Ignore the arrow. Wander in your yard or a field and shoot at unknown distances. Focus only on deliberate full draw, tight anchor and good release. You don't recognize the tab and you don't care where the arrow hits. Shoot to have fun and build form.
I'm confident you'll be fine with time and good practice. Most of it is mental.