Corrupt chart data?

 

My MT4 charts all go crazy at 23 March 2020. The first pic ends on 23 March. You can see that the ATR is starting to shoot off the scale. The next is one candle forward, where you can see that the price axis has shot up to show ridiculous figures and the earlier data has disappeared. The chart then flatlines, with a couple of bumps, to 10 May 2021, before everything reappears back to 24 March 2020. So, no data is missing, because the 'reappeared' data starts where the 'disappeared' data leaves off, but when I'm backtesting, the backtests take place in the flat area, meaning I can't examine those trades. I have tried downloading history, but get the message that no more is available. This happens with all currency pairs.

I have MT4 installed with two brokers, and this only happens on one of them, but it doesn't happen on the their own platform.


Any ideas to fix, please?

Files:
Missing_1.png  35 kb
Missing_2.png  27 kb
Missing_3.png  33 kb
 
Found out it's a broker problem (IG UK). You'd think they'd have enough money to get it fixed.