Access denied

I was having a note on D++ yesterday that there is a new version of D++.
After I installed the new version, I can't connect to D++ anymore.

[19:57] <*Dtella> 4. Sync Complete; You're Online!
[19:57] <*Dtella> The topic is: April's fools over (set by ~perfinion)
[19:57] <*Dtella> You were kicked by *IRC: Channel Ban
[19:57] <*Dtella> Type !REJOIN to get back in.
[19:59] <wow98> !REJOIN
[19:59] <*Dtella> Rejoining...
[19:59] <*Dtella> The topic is: April's fools over (set by ~perfinion)
[19:59] <*Dtella> You were kicked by *IRC: Channel Ban
[19:59] <*Dtella> Type !REJOIN to get back in.

Its keep on showing the same phrase.