Update: You can use Tower as usual.
Tower issue is still on going but we cleaned up jobs history and retain 30 day. Now you can use Tower. For now, we will monitor the situation and see whether cleanup will help or not. If not, we're planning to upgrade the RD
We're currently working on this issue and will post the update in this slack post (#site-infra-channel and #release-and-hotfix) and in this document https://docs.google.com/document/d/1XZi_IDgeOdlZkCFJSpOhf-LonzGMMgdOMWn4Pk48n2Q/edit#