I used a Forma on the wrong Weapon or Warframe!
Unfortunately, much like an Orokin Reactor or Catalyst, once a Forma has been applied it cannot be removed.
I tried to remove a polarity but I couldn't. And now I lost a Forma and my item's rank reset.
What most likely happened is you did not select the correct polarity when trying to remove the polarity. To remove a polarity you must cycle through the polarity until you see a blank hexagon with no polarity symbol.
If you select no polarity and hit 'Apply' you will lose a Forma and reset the item's rank without making any changes. If this happens please submit a support ticket immediately and we will assist you fixing the issue.
I tried to polarize my weapon, didn't register properly, tried again, and now 2 Formas were taken away for 1 polarization, and it shows that I got 2 polarity stars from it.
Please send us a support ticket immediately after the issue occurs and if we can confirm the error we will fix the item's polarity count and return a Forma to your inventory.
I accidentally put the wrong polarity on a weapon or Warframe!
If you accidentally Forma'd a weapon or Warframe with a polarity you did not intend to apply, please file a support ticket immediately and refrain from polarizing the item in question again until we get back to you. While a Forma is non-removable once applied, we can modify one slots polarity as as a courtesy if reported immediately. Please make sure to include in the ticket all relevant details.
Note: An accidental polarization fix is an one time service per account available only if immediately reported.