A lot of my lurker friends have been laughing their tails off over the thread title what blade/rubber combo is in use with the limited experience and training level.
It is beyond apparent when a player with a play style of flexible offensive attack and not so developed fundamentals suddenly gets an OFF+ Balsa-Carbon blade and wonders why it is more difficult to land the common offensive shots.
That setup is optimized for a hitter (at least the blade is) who plays mostly direct impact shots with very solid impact producing flat shots with pace and little spin. This setup class (OFF+ blade and more controllable modern rubbers) is the favored setup of old-school Korean coaches when they start someone out. (as much as it would shock a pundit). That type of setup makes it very easy to use a low power, technically sound compact stroke (the very ones they start out teaching) to produce a fast, straight ball with little spin close to the table. Very quickly, (like within the first 1-3 months of training) these new Korean players become very good at fast drives close to the table with placement and often hit 100 or 200 consecutive without miss.
The point of all that paragraph is that the uber fast setup in question, while crappy for flexible OFF play is a controllable preferred option for a different style of play.
The thing that is cracking up my lurker friends is that the OP plays what appears to be a common flexible offensive style (that the center of mass is ALL to OFF- blade and modern control oriented dynamic rubbers) and is using the polar opposite of that (OFF+ blade and more dynamic oriented rubber) without having established/fully developed fundamentals and is wondering why it is now much more difficult to land the common offensive topspin shots.
It would be very obvious why... and there is now a lengthy thread inquiring about this.
What is even more remarkable about this is that the OP goes to an actual table tennis center (where we would presume are coaches, more knowledgeable/experienced players), has the opportunity to actually practice and presumably, receive some basic feedback and what the player is doing right and wrong.
If a player is not in such a favorable situation, it may be understandable for a player to make such a mistake about equipment and wonder what is going on as such a player has no one around them who knows. In this situation, it is common to make an equipment selection mistake and not know it.
In my own country of USA, the most common place where we play is not an established full time TT club open every day, but great majority only have a 1-2 time a week "TT Club" that is basically volunteers renting out community center space for a couple hours 1-2 times a week to setup tables and play, winner stay and get off after 3 wins, loser make a claim for next match on a table, and wait 3 matches or an hour to get back on.
Players do not generally develop much anything of fundamentals at such a place for obvious reasons. It would be much more understandable for a player from this situation to make this error, not know, and ask about it.
Even if this class of player in that situation were given the most appropriate bat to develop (say a common wooden ALL+ with Vega to use on of a million examples) these kind of players already have many ingrained poor strokes, never developed fundamentals, have no access to coaching or a place to get coached, or if no coach, at least no better knowledgeable player to guide and correct... so this class of player could use the most appropriate equipment and still never develop. (Heck, I see this class of player in a regular full time club)
Why do I write all that?
Heck, that is EXCATLY how I got my start. For 4 years, that is what TT was for me... barely able to get to where tables are setup and no chance to train, get coaching, or learn much. Since I wasn't better than most, I would get on a table, play the match, and promptly get the Das Boot off the table. I also had zero sense of equipment. Soon enough, when I wanted some more "power" I also ended up with an OFF+ blade and some of the most offensive rubbers around... and it wasn't helping my shots... but in that situation, there really wasn't much help for me until I cold get in a situation with better structure to learn the fundamentals and get supervised experience. Myself included at that time, you coulda handed me the same appropriate setup and I still would have missed a lot of shots. I just wasn't fundamentally sound at that time and the trendline for me wasn't good either.
I can say I have been there and done that the exact say manner in which the OP did. If I was around coaches and better players, I could have avoided it, but it is kinda like birth or growth pains in the sport that many of us go through.