I’ve watched the videos on Youtube, they haven’t helped.
I’d have a track on ableton live standard 12 and scaler 3 would pick up the scale let’s say A major, but then when I want to use artist or common chord progressions, the scale changes, but it’s like what if I wanted a common chord progression to be in my scale of A major? I locked it but it still seems like it’s changing.
Hi @cutiepie welcome to the forum. It sounds like you are on the right track. Once Scaler 3 has detected a scale e.g. A major, you should see that scale selected in Section B as your current scale.
Then if you click on the scale lock icon in section A, it should lock your current scale selection. Then any chord set you select, such those in the artist or common chord progression categories should automatically transpose to the key of your selected scale e.g. A major, and your selected scale should not change.
Note that you do need to enable scale lock before selecting a chord set. Enabling scale lock will not change your currently selected chord set.
That looks like you’re locking the chord set rather than the current scale. 
In a way it is doing both, however the functionality is specifically related to chord sets.
Without scale lock enabled, selecting a chord set from the browser will perform a detection analysis on those chords (like selecting chords and choosing detect from the right click menu) and automatically select the closest matching scale. This scale will replace your current scale selection.
With scale lock enabled, selecting a chord set will transpose the chords to match your current scale, so your selected scale does not change.
Ah, so you’re locking the scale of the current chord set. 
Thank you for this–I think I’m getting closer. Okay, so once scaler 3 detects a scale, there’s usually like a lot of chords on A) Chord Set, so do I have to remove those chords one by one until there’s only the chords of the scale detected?
I just removed some of the chords that I felt like didn’t make sense, but I wanted to try the 3rd suggested scale which was D Lydian, but I kept the rest of the chords in there, but once I locked it by pressing the lock button and the yellow button with the two chains interconnected to each other, my scale changed to A major for a bit and now it’s B Dorian mode no matter how many times I’ve clicked on different chord progressions. Also is there any way I can search up the scale I want to use?
I think my main thing is, I want to be able to use scaler 3’s scale suggestions with the chord progressions under artists without it changing it’s scale, but after I’m done trying one scale suggestion, I want to be able to use the 2nd or 3rd scale suggestion it gave me.
Also I’m trying to listen to my music along with scaler 3 even after I synced it with my daw but my music on ableton is too loud I can’t hear scaler 3. What can I do?
OK glad to hear you are making some progress. You have several questions here so apologies if I don’t address all of them.
No you do not have to, however Scaler’s audio detection is not always perfect (like any audio detection) and may detect some incorrect chords. You can remove these from Section A if you’d like however this will (for better or worse) potentially alter the list of detected scales in Section B. There is a Scaler Music YouTube video covering audio detection in Scaler 3 if you have not watched it already: https://youtu.be/V9yfiu_OA-8?si=-KmqJhyi3ulqme__
Clicking the lock icon should not change your selected scale. It should prevent your selected scale from changing until you manually select another scale. The yellow button with the chains is the bind button. This allows you to trigger chords from that section by playing single MIDI notes, and is not related to scale selection at all. You can find more information about binding in the built in tutorial: Click Scaler logo in top left - Help - Open Tutorial.
The All Scales section of the Browse page allows you to find and search for scales. This is also described in the built-in tutorial. Note there will be a Scaler 3.1.2 update released very soon which improves the scale search functionality.
If you change your selected scale with scale lock enabled, your selected chord set will not change at all. Chord sets are only transposed when they are initially selected. To transpose your selected chord set to this new scale you may need to select a different chord set, then select the previous chord set again.
