When you switch to Syncro from another RMM that uses Splashtop, you need to ensure the instances of Splashtop on each platform don't clash. 

These are the general steps to take, but you may need to modify them based on which RMM you used:

1. In your former RMM, update policies to ensure they will not install Splashtop on assets or reinstall Splashtop if removed from assets, then push out those policies to all assets.
2. If you are unable to do step 1 in your former RMM's policies, you will need to uninstall those policies to ensure they don't reinstall Splashtop.
3. Create a new Syncro asset policy  with the “Allow Technicians Remote Access To Assets On This Policy” box unchecked.
4. Install the Syncro Agent  on remote endpoints with the new asset policy applied.
5. Go the Community Script library and import the "Uninstall Splashtop" script. (A manual uninstall from the Control Panel works too.)
6. Go to the Assets & RMM page and run that uninstall script on all assets that have Splashtop installed (or whatever way you want to run it).
7. Apply a new policy to the Syncro agents which has the “Allow Technicians Remote Access To Assets On This Policy” box checked.
8. Wait a bit to ensure Syncro completes installing the Splashtop Streamer on your assets.
9. Instruct your former RMM to uninstall itself, or use Syncro scripts to run the old RMM's uninstall executable.