problem with project statistics

[JuanMeloColombia]

since a few weeks ago, there have been problems in the display of project statistics since it does not show the number of buildings created and kilometers of roads mapped.

[ramyaragupathy]

@JuanMeloColombia - thanks for flagging this issue. Leaderboard service, which has been providing us this data, is not functional any more starting mid-September. We are aware of it, and we are transitioning the data source to ohsome now stats. Your OSM and TM contributions are intact and this should be available on Tasking Manager from mid-October. Thanks for your patience while we get this done!

cc @konishon @kaditya97 @HelNershingThapa