In OLX donation forms you can add offline donations when you select 'Goal amount'. This creates a totaliser that can be embedded for the website, allowing donors to be a part of the goal tracking. In donation forms this isnt possible, you can either use the totaliser for just the donations through the form (and not any that come in by post or BACS etc), or use a gift lift which only counts processed and approved gifts so isn't updated live for website users.